Patent
Suchergebnisse für: Friden

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Patent:12229889
17.01.2011 Friden, Carl Mauritz Fredrick (P) Friden (P) : Calculating Machine
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Patent:12229890
17.01.2011 Friden, Carl Mauritz Fredrick (P) Friden (P) : Calculating Machine
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Patent:12229895
17.01.2011 M. Lothrop Friden (P) : Calculating Machine
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Patent:12229901
17.01.2011 A. I. Richards Friden (P) : Calculating Machine
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Patent:12273857
17.01.2011 Friden, Carl Mauritz Fredrick (P) Friden (P) : Calculating Machine
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Patent:12279455
17.01.2011 Friden, Carl Mauritz Fredrick (P) Friden (P) : Calculating Machine
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Patent:12279456
17.01.2011 Friden, Carl Mauritz Fredrick (P) Friden (P) : Calculating Machine
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Patent:12279474
17.01.2011 Machado, Antony (P) Friden (P) : Calculating Machine
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Patent:12279480
17.01.2011 Moody, John L. (P) Friden (P) : Calculating Machine Switch
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Patent:12279481
17.01.2011 Moody, John L. (P) Friden (P) : Calculating Machine
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Patent:12285427
17.01.2011 Friden, Carl Mauritz Fredrick (P) Friden (P) : Calculating Machine
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Patent:12294111
17.01.2011 Friden, Carl Mauritz Fredrick (P) Friden (P) : Calculating Machine
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Patent:12294112
17.01.2011 Friden, Carl Mauritz Fredrick (P) Friden (P) : Clutch
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Patent:12306247
17.01.2011 Friden, Carl Mauritz Fredrick (P) Friden (P) : Calculating Machine
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Patent:12310280
17.01.2011 Friden, Carl Mauritz Fredrick (P) Friden (P) : Calculating Machine
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Patent:12310281
17.01.2011 Friden, Carl Mauritz Fredrick (P) Friden (P) : Calculating Machine
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Patent:12311354
17.01.2011 Friden, Carl Mauritz Fredrick (P) Friden (P) : Calculating Machine
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Patent:12313817
17.01.2011 Friden, Carl Mauritz Fredrick (P) Friden (P) : Calculating Machine
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Patent:12315780
17.01.2011 Friden, Carl Mauritz Fredrick (P) Friden (P) : Calculating Machine
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Patent:12325388
17.01.2011 Friden, Carl Mauritz Fredrick (P) Friden (P) : Calculating Machine
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Patent:12327635
17.01.2011 Friden, Carl Mauritz Fredrick (P) Friden (P) : Calculating Machine
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Patent:12327704
17.01.2011 Friden, Carl Mauritz Fredrick (P) Friden (P) : Calculating Machine
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Patent:12327981
17.01.2011 Friden, Carl Mauritz Fredrick (P) Friden (P) : Calculating Machine
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Patent:12329649
17.01.2011 N. B. Pinyan Friden (P) : Calculating Machine
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Patent:12330512
17.01.2011 Moody, John L. (P) Friden (P) : Calculating Machine
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Patent:12331827
17.01.2011 A. S. Dennis Friden (P) : Typewriter
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Patent:12331829
17.01.2011 Friden, Carl Mauritz Fredrick (P) Friden (P) : Carriage Shift Mech for Calculating Machines
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Patent:12334430
17.01.2011 Moody, John L. (P) Friden (P) : Calculating Machine
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Patent:12334431
17.01.2011 Moody, John L. (P) Friden (P) : Calculating Machine
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Patent:12343241
17.01.2011 Moody, John L. (P) Friden (P) : Calculating Machine
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Patent:12352376
17.01.2011 Friden, Carl Mauritz Fredrick (P) Friden (P) : Calculating Machine
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Patent:12359661
17.01.2011 Moody, John L. (P) Friden (P) : Calculating Machine
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Patent:12360704
17.01.2011 Moody, John L. (P) Friden (P) : Calculating Machine
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Patent:12363737
17.01.2011 Machado, Antony (P) Friden (P) : Calculating Machine
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Patent:12365507
17.01.2011 P. H. Allen Friden (P) : Calculating Machine
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Patent:12365527
17.01.2011 A. S. Dennis Friden (P) : Calculating Machine
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Patent:12366345
17.01.2011 Machado, Antony (P) Friden (P) : Revolution Counter Control
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Patent:12371752
17.01.2011 Friden, Carl Mauritz Fredrick (P) Friden (P) : Calculating Machine
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Patent:12376997
17.01.2011 Friden, Carl Mauritz Fredrick (P) Friden (P) : Calculating Machine
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Patent:12380642
17.01.2011 Friden, Carl Mauritz Fredrick (P) Friden (P) : Centralizing Mechanism
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Patent:12388209
17.01.2011 Friden, Carl Mauritz Fredrick (P) Friden (P) : Revolutions Counter Actuator
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Patent:12388211
17.01.2011 Machado, Antony (P) Friden (P) : Constant Multiplier Control
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Patent:12391089
17.01.2011 Friden, Carl Mauritz Fredrick (P) Friden (P) : Keyboard Release Mechanism
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Patent:12391098
17.01.2011 Machado, Antony (P) Friden (P) : Calculating machine
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Patent:12399917
17.01.2011 Friden, Carl Mauritz Fredrick (P) et al Friden (P) : Calculating Machine
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Patent:12401473
17.01.2011 Friden, Carl Mauritz Fredrick (P) et al Friden (P) : Calculating Machine
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Patent:12403069
17.01.2011 Friden, Carl Mauritz Fredrick (P) et al Friden (P) : Calculating Machine
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Patent:12403111
17.01.2011 Moody, John L. (P) Friden (P) : Calculating Machine
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Patent:12403273
17.01.2011 Friden, Carl Mauritz Fredrick (P) et al Friden (P) : Calculating Machine
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Patent:12405562
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Apparatus for Printing
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Patent:12421213
17.01.2011 Moody, John L. (P) Friden (P) : Centrifugal Operating Switch
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Patent:12425178
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Motor Control
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Patent:12427271
17.01.2011 Friden, Carl Mauritz Fredrick (P) et al Friden (P) : Multiplier Correction Mechanism
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Patent:12434001
17.01.2011 Moody, John L. (P) Friden (P) : Governor Construction
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Patent:12436112
17.01.2011 Machado, Antony (P) Friden (P) : Latch Operated Positive Clutch Mechanism
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Patent:12453926
17.01.2011 Moody, John L. (P) Friden (P) : Revolution Counter Actuator
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Patent:12456980
17.01.2011 Moody, John L. (P) Friden (P) : Motor and Clutch Control Mechanism
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Patent:12634053
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Tabulation Control Incident to Indexing a Multiplication Factor
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Patent:12650761
17.01.2011 Machado, A. B. (P) Friden (P) : Calculating Machine
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Patent:12653762
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Dividend Aligning Mechanism
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Patent:12653763
17.01.2011 Hopkins, G. W. (P) Friden (P) : Dividend Aligning Mechanism
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Patent:12653764
17.01.2011 Hopkins, G. W. (P) Friden (P) : Division Aligner
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Patent:12653765
17.01.2011 Machado, A. B. (P) et al Friden (P) : Dividend Aligning Mechanism
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Patent:12687254
17.01.2011 Hopkins, G. W. (P) et al Friden (P) : Total Transfer Mechanism
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Patent:12692084
17.01.2011 Taylor, L. B. (P) et al Friden (P) : Multiplication Function Control Device
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Patent:12714986
17.01.2011 Moody, J. L. (P) et al Friden (P) : Single Cycle Mechanism
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Patent:12714989
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Calculating Machine
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Patent:12722376
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Back Transfer Calculating Machine
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Patent:12722377
17.01.2011 Davis, E. A. (P) Friden (P) : Dividend Divisor Aligning Mechanism
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Patent:12733007
17.01.2011 Rolph, D. L. (P) Friden (P) : Power Operated Selection Mechanism
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Patent:12736492
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Square Root Mechanism
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Patent:12736493
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Square Root Calculating Machine
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Patent:12736494
17.01.2011 Ellerbeck, G. C. (P) et al Friden (P) : Square Root Calculating Machine
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Patent:12753114
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Division Terminating Mechanism
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Patent:12755997
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Nonreversing Countercontrol for Division Operations
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Patent:12758789
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Multi-Purpose Registers
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Patent:12764347
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : MultiplyingDividing Machine, Including Mechanism for Registering a Quotient in a Multplier Storage Device
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Patent:12768788
17.01.2011 Davis, E. A. (P) Friden (P) : Selection Mechanism
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Patent:12776795
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Extended Tens Transfer Control Mechanism
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Patent:12794595
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Calculating Machine
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Patent:12794596
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Back-Transfer Mechanism
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Patent:12797869
17.01.2011 J. E. Grobl Friden (P) : Tens-Transfer Control Means in a Decimal Elimination Mechanism
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Patent:12809786
17.01.2011 G. W. Hopkins Friden (P) : Dividend Divisor Aligning Mechanism
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Patent:12812138
17.01.2011 A. J. Malavazos Friden (P) : Keyboard
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Patent:12814031
17.01.2011 R. A. Davis Friden (P) : Magnetic Storage Keyboard
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Patent:12824695
17.01.2011 G. Plunkett et al Friden (P) : Constant Multiplier Mechanism
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Patent:12828913
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Back Transfer Mechanism
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Patent:12828914
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Counter Actuator
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Patent:12828918
17.01.2011 A. J. Malavazos Friden (P) : Keyboard for Calculating Machine
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Patent:12832532
17.01.2011 Chall, Harold (P) et al Friden (P) : Ten-Key Calculating Machine with Backspacing Mechanism
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Patent:12847160
17.01.2011 Hawthorne, Nathaniel (P) et al Friden (P) : Calculating Machine
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Patent:12847164
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Value Approximation Mechanism
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Patent:12852192
17.01.2011 Hawthorne, Nathaniel (P) Friden (P) : Carriage Shift Controlling Mechanism
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Patent:12864559
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Dividend-Divisor Aligning Mechanism
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Patent:12868453
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Mechanism for the Accumulation of Products Around a Fixed Decimal
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Patent:12868454
17.01.2011 D. F. Rutland et al Friden (P) : Multiplying Mechanism for Accumulating Products Around a Fixed Decimal
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Patent:12872115
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Multiplying Calculator
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Patent:12886238
17.01.2011 G. Plunkett Friden (P) : Short-Cut Multiplying Mechanism
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Patent:12898039
17.01.2011 E. Ungricht Friden (P) : Constant Factor Storage Mechanism for a Calculating Machine
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Patent:12909320
17.01.2011 A. J. Malvazos Friden (P) : Back Transfer Mechanism
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Patent:12919852
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Calculating Machine
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Patent:12926845
17.01.2011 Davis et al Friden (P) : Calculating Machine
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Patent:12926846
17.01.2011 Malavazos et al Friden (P) : Predetermined Carriage Shifting and Dividend Entering Means for a Calc Mach
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Patent:12928597
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Interregister Transfer Device for Calculating Machines
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Patent:12933247
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Short-Cut Multiplying Machine
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Patent:12935253
17.01.2011 Chall, Harold (P) et al Friden (P) : Selection Mechanism for Ten-Key Multiplier Control Unit
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Patent:12935254
17.01.2011 Plunkett Friden (P) : Calculating Machine
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Patent:12946505
17.01.2011 Davis Friden (P) : Calculating Machine
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Patent:12946506
17.01.2011 Malavazos Friden (P) : Multiplying Mechanism
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Patent:12950051
17.01.2011 Malavazos Friden (P) : Calc Mach Differential Drive and Tens Carry Mechanism
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Patent:12956742
17.01.2011 Colvin Friden (P) : Calculating Machine
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Patent:1296387
17.01.2011 Friden (P) : Rechenmaschine.
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Patent:12975968
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Calculating Machine
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Patent:13000557
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Calculating Machine
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Patent:13003685
17.01.2011 Chall, Harold (P) et al Friden (P) : Escapement Control Mechanism for Ten Key Calc Mach
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Patent:13003689
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Calculating Machine
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Patent:13003690
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Calculating Machine
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Patent:1311849
17.01.2011 Friden (P) : Rechenmaschine.
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Patent:13231192
17.01.2011 Ellerbeck, Grant Clawson (P) Friden (P) : Back Transfer Mechanism for Calc Mach
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Patent:DE1165911
01.01.1952 Ellerbeck, Grant Clawson (P) Friden (P) : Einrichtung zum selbsttaetigen Ziehen von Quadratwurzeln
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Patent:DE1806670
26.06.1969 Meyer Sanchez, Fred Friden (P), Inc. : Blockiereinrichtung für die Tasten einer Tastatur
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Patent:GB1090761
15.11.1967 Friden (P) : Calculator
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Patent:GB1090762
15.11.1967 Friden (P) : Calculator
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Patent:GB1090763
15.11.1967 Friden (P) : Calculator
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Patent:GB1090764
15.11.1967 Friden (P) : Electronic calculator
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Patent:US1764959
17.06.1930 Clarence L. Johnston Carl M.F. Friden (P) Marchant (P) Calculating Machine Comp. : Calculating machine
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Patent:US2294124
25.08.1942 John L. Moody Friden (P) Calculating Machine Co., Inc. : Governor construction
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Patent:US2346834
18.04.1944 Friden, Carl Mauritz Fredrick (P) John L. Moody Friden (P) Calculating Machine Co., Inc. : Calculating machine
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Patent:US2530515
21.11.1950 Ellerbeck, Grant C. Friden (P) Calculating Machine Co., Inc. : Value selecting and entering mechanism
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Patent:US2539948
30.01.1951 Ellerbeck, Grant Clawson (P) Friden (P) Calculating Machine Co., Inc. : Power-operated sign adjusting means
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Patent:US2580298
25.12.1951 Moody, John (P), Hopkins, George (P) Friden (P) : Automatic stop for calculating machines
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Patent:US2586420
19.02.1952 Ellerbeck, Grant Clawson (P) Friden (P) : Printing mechanism for adding machines
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Patent:US2597463
20.05.1952 Grant C. Ellerbeck Friden (P) Calculating Machine Co. Inc. : Auxiliary tens-transfer mechanism
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Patent:US2597487
20.05.1952 George W. Hopkins Jon E. Grohl Friden (P) Calculating Machine Co. Inc. : Auxiliary tens-transfer mechanism
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Patent:US2597488
20.05.1952 George W. Hopkins Friden (P) Calculating Machine Co. Inc. : Auxiliary tens-transfer control
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Patent:US2597507
20.05.1952 Anthony B. Machado Gilman Plunkett Friden (P) Calculating Machine Co., Inc. : Auxiliary tens-transfer control mechanism
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Patent:US2602585
08.07.1952 Ellerbeck, Grant Clawson (P) Friden (P) Calculating Machine Co., Inc. : Add-subtract register
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Patent:US2608346
26.08.1952 George W. Hopkins Friden (P) Calculating Machine Co. : Ten key differential entry mechanism
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Patent:US2660377
24.11.1953 Harold J. Chall Friden (P) Calculating Machine Co., Inc. : Constant factor mechanism
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Patent:US2666582
19.01.1954 Anthony B. Machado Frank J. Pruellage Friden (P) Calculating Machine Co., Inc. : Split clearing mechanism
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Patent:US2668660
09.02.1954 Ellerbeck, Grant Clawson (P) Friden (P) Calculating Machine Co. : Plural totalizer adding machine
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Patent:US2692110
19.10.1954 Roy J. Renholts Friden (P) Calculating Machine Co. Inc. : Joint for base and frame elements
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Patent:US2701099
01.02.1955 Ellerbeck, Grant Clawson (P) Friden (P) Calculating Machine Co. Inc. : Degrees, minutes and seconds machine
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Patent:US2714990
09.08.1955 Anthony B. Machado Friden (P) Calculating Machine Co., Inc. : Operation terminating mechanism
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Patent:US2728521
27.12.1955 Bernard S. Beisson Michael J. Markakis Lawrence W. Danenberg Harold J. Rounds Friden (P) Calculating Machine Co., Inc. : Apparatus for typing symbols from a register
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Patent:US2732924
31.01.1956 Hawthorne, Nathaniel (P) Friden (P) Calculating Machine Co. Inc. : Reversible ribbon feed mechanism for adding machines
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Patent:US2733010
31.01.1956 Ellerbeck, Grant Clawson (P) Friden (P) Calculating Machine Co., Inc. : Clearing mechanism
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Patent:US2733011
31.01.1956 Elwood A. Davis Friden (P) Calculating Machine Co., Inc. : Clearing
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Patent:US2736497
28.02.1956 Ellerbeck, Grant Clawson (P) Friden (P) Calculating Machine Co., Inc. : Auxiliary keyboard mechanism adapted for square root operations
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Patent:US2764352
25.09.1956 Ellerbeck, Grant Clawson (P) Friden (P) Calculating Machine Co., Inc. : Auxiliary selection and operating devices for a ten-key indexing mechanism
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Patent:US2770416
13.11.1956 Hopkins, George (P) Friden (P) : Calculating Machine
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Patent:US2774536
18.12.1956 Harold J. Chall Friden (P) Calculating Machine Co., Inc. : Calculating machine
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Patent:US2779267
29.01.1957 Chall, Harold (P) Friden (P) : Printing mechanism for a calculating machine
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Patent:US2807348
24.09.1957 Balaz, Charles (P), Chall, Harold (P) Friden (P) : Platen guard for listing adding machine
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Patent:US2832530
29.04.1958 Chall, Harold (P) Friden (P) : Value selecting and transmitting mechanism for listing adding machine
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Patent:US2832531
29.04.1958 Chall, Harold (P) Friden (P) : Actuating mechanism for adding machine
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Patent:US2832533
29.04.1958 Chall, Harold (P) Friden (P) : Totalizing mechanism for listing adding machine
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Patent:US2832534
29.04.1958 Chall Harold (P), Malavazos, Arthur (P) Friden (P) : Control means for listing adding machine
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Patent:US2832544
29.04.1958 Chall, Harold (P) Friden (P) : Calculating machine
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Patent:US2842310
08.07.1958 Morian P. Matthew Friden (P) : Typewriter controlled calculators
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Patent:US2857098
21.10.1958 Chall, Harold (P) Friden (P) : Register clear symbol printing mechanism for calculating machine
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Patent:US2861739
25.11.1958 Chall, Harold (P) Bernhard P. Silverman Friden (P) : Perforated record making adding machine
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Patent:US2864554
16.12.1958 Donald L. Rolph Robert A. McKee Friden (P) : Printing calculating apparatus switch means
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Patent:US2868445
13.01.1959 Chall, Harold (P) Charles S. Balaz Friden (P) : Repeat addition mechanism for ten key adding machine
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Patent:US2883105
21.04.1959 Gottfried Zickler, Grobl Jon Friden (P) : Ten key adding machine clearing mechanism
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Patent:US2893631
07.07.1959 Nils H. Bergfelt Friden (P) : Power operated sign control mechanism
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Patent:US2908441
13.10.1959 Hawthorne, Nathaniel F. Friden (P), Inc. : Tens transfer mechanism for a duplex calculating machine
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Patent:US2954922
04.10.1960 Chall, Harold (P) Friden (P) : Symbol printing mechanism
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Patent:US2969178
24.01.1961 Starr Friden (P) : Automatic Carriage Shifting Mechanism for a Calc Mach
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Patent:US2970756
07.02.1961 Gilbert J. Spesock Donald L. Rolph Charles S. Balaz Friden (P) : Electro-magnetic selecting apparatus
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Patent:US3021055
13.02.1962 Chall, Harold (P) Friden (P) : Zero setting control means
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Patent:US3022947
27.02.1962 Vito Viola Cecil Olson Friden (P) Calculating Machine Co. Inc. : Tens-transfer mechanism
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Patent:US3022948
27.02.1962 Arthur J. Malavazos John W. Jamieson Friden (P) : Tens-transfer mechanism
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Patent:US3030018
17.04.1962 Ellerbeck, Grant Clawson (P) Friden (P) : Calc Mach Cycle Inititiating Mechanism
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Patent:US3032263
01.05.1962 Davis et al Friden (P) : Calculating Machine
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Patent:US3036763
29.05.1962 Chall, Harold (P) Friden (P) : Calculating machine for converting scale readout to pounds and ounces
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Patent:US3045907
24.07.1962 Malavazos Friden (P) : Calculating Machine
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Patent:US3055579
25.09.1962 Chall, Harold (P) et al Friden (P) : Calculating Machine
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Patent:US3062439
06.11.1962 Ellerbeck, Grant Clawson (P) Friden (P) : Program Control Mech for a Square Root Calc Mach
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Patent:US3066864
04.12.1962 Malavazos et al Friden (P) : Calculating Machine
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Patent:US3079076
26.02.1963 Ellerbeck, Grant Clawson (P) Friden (P) : Calculating Machine
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Patent:US3090554
21.05.1963 Malavazos Friden (P) : Calculating Machine
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Patent:US3107607
22.10.1963 Chall, Harold (P) Cecil G. Olson Friden (P) : Decimal point printer calculating machines
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Patent:US3107851
22.10.1963 Malavazos et al Friden (P) : Calculating Machine
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Patent:US3107852
22.10.1963 Plunkett et al Friden (P) : Calculating Machine
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Patent:US3108745
29.10.1963 Chall, Harold (P) et al Friden (P) : Calculating Machine
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Patent:US3110441
12.11.1963 Ellerbeck, Grant Clawson (P) Friden (P) : Calculating Machine
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Patent:US3128945
14.04.1964 Malavazos et al Friden (P) : Calculating Machine
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Patent:US3145923
25.08.1964 Chall, Harold (P) et al Friden (P) : Multiplier Control Mechanism for a Short-Cut Multiplication Machine
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Patent:US3159341
01.12.1964 Ellerbeck, Grant Clawson (P) Friden (P) : Extended Square Root Mech for a Square Root Calc Mach
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Patent:US3173608
16.03.1965 Malavazos Friden (P) : Calculating Machine
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Patent:US3181786
04.05.1965 Canevari Friden (P) : Calculating Machine With Control of Decimal Places
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Patent:US3184159
18.05.1965 Chall, Harold (P) et al Friden (P) : Progressive Latches for Calc Mach
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Patent:US3207430
21.09.1965 Gross Friden (P) : Split Multiplication Mechanism for Calc Mach
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Patent:US3210000
05.10.1965 Harold J. Chall Friden (P) Calculating Machine Co. Inc. : Calculating machine
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Patent:US3212704
19.10.1965 Chall, Harold (P) et al Friden (P) : Multiplication Control for Calculating Machine
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Patent:US3212705
19.10.1965 Chall, Harold (P) et al Friden (P) : Control for Short-Cut Multiplication
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Patent:US3214094
26.10.1965 Ellerbeck, Grant Clawson (P) Friden (P) : Calculating Machine
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Patent:US3214095
26.10.1965 Malavazos Friden (P) : Chain Discount Mechanism for Calculating Machine
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Patent:US3214097
26.10.1965 Chall, Harold (P) and Pastrone, Giovanni Friden (P) : Multiplication Control for Calculating Machine
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Patent:US3216657
09.11.1965 Chall, Harold (P) et al Friden (P) : Calc Mach for Performing Division
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Patent:US3249301
03.05.1966 Malavazos et al Friden (P) : Back Transfer Mechanism for Calc Mach
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Patent:US3253266
24.05.1966 Samwel Jan A Friden (P) : Calculating Machine
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Patent:US3253779
31.05.1966 Chall, Harold (P) Friden (P) : Accumulator Drive
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Patent:US3254834
07.06.1966 Canevari Friden (P) : Plural Register Printing Calculator
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Patent:US3260448
12.07.1966 Chall, Harold (P) Friden (P) : Calculating Machine
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Patent:US3260451
12.07.1966 Malavazos et al Friden (P) : Calculating Machine
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Patent:US3285510
15.11.1966 Chall, Harold (P) et al Friden (P) : Division Control for Calc Mach
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Patent:US3285511
15.11.1966 Canevari Friden (P) : Calculating Machine
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Patent:US3331554
29.10.1963 Chall, Harold (P) George W. Bowers Friden (P) : Calculating machine
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Patent:US3523282
04.08.1970 Ragen Robert A Friden (P) : Calculator
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Patent:USD103425
02.03.1937 Friden Friden (P) : Calculating Machine with Shiftable Carriage
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