Patent
-
Patent:US1654946
03.01.1928 Sinks Charles M : Automatic paper-straightening attachment for adding machines
-
Patent:US1655570
10.01.1928 Shipley, Bernis (P) NCR (P) : Cash register
-
Patent:US1655819
10.01.1928 Rodney Nichols Charles : Calculating Device
-
Patent:US1656786
17.01.1928 John Joseph Gahan : Machine-gun fire-data finder
-
Patent:US1657411
24.01.1928 Scherbius, Arthur (P) Chiffriermaschinen AG : Ciphering Machine
-
Patent:US1657696
31.01.1928 Robertson, William (P) NCR (P) : Cash register
-
Patent:US1657712
31.01.1928 Goldberg, Maximilian Meyer (P) NCR (P) : Printing and perforating mechanism for cash registers
-
Patent:US1657828
31.01.1928 Pruett H. Henderson : Expense register actuator
-
Patent:US1657872
31.01.1928 C. E. Turnquist : Combined Calendar Calculator and Chart
-
Patent:US1657923
31.01.1928 M. Goshko : Adding Machine
-
Patent:US1658022
31.01.1928 C. Campbell : Record Card Controlled Statistical Machine
-
Patent:US1658024
31.01.1928 Bryce, James (P) Tabulating Machine (P) Company : Record-controlled machine
-
Patent:US1658036
07.02.1928 Bindschedler, Theodore (P) Burroughs (P) : Make and break switch for adding machines
-
Patent:US1658949
14.02.1928 Montreville Somes : Rule slide for setting blank forms on slug-casting machines
-
Patent:US1658993
14.02.1928 Leo G.A. Kömmling NCR (P) : Cash register
-
Patent:US1659246
14.02.1928 Robert S. Drew Curtis L. Cruver Cruver Manufacturing Comp. : Calculating device
-
Patent:US1659357
14.02.1928 W. T. Foultz te al : Computing Machine
-
Patent:US1659901
21.02.1928 A. T. Winquist : Counter Pencil
-
Patent:US1660638
28.02.1928 Warner Lester C Internat Accounting Machine Co : Adding Machine
-
Patent:US1661095
28.02.1928 Eugene Rowe Joseph : Calculating Instrument
-
Patent:US1661096
28.02.1928 Rowe, Joseph Eugene (P) : Mathematical Instrument
-
Patent:US1661110
28.02.1928 Cox, John D. : Calendar
-
Patent:US1661277
06.03.1928 Thomas, Lucie (P), Meuter, Lucie (P), Bergmann, Jean (P) : Computing machine
-
Patent:US1661684
06.03.1928 Arthur Thomas Accounting and Tabulating Corp O : Statistical, calculating, and like machine controlled by mechanical records
-
Patent:US1662526
13.03.1928 Luttropp, Conrad (P) : Calculating Machine
-
Patent:US1663726
27.03.1928 Pfeifer, John (P) Kel-San (P) Mfg. Co. : Adding Machine
-
Patent:US1664454
03.04.1928 Franklin L. Hunt Roy C. Sylvander : Aircraft ground-speed indicator
-
Patent:US1664661
03.04.1928 Chase, George (P) Monroe (P) Calculating Machine Comp. : Full cycle positioning mechanism
-
Patent:US1664818
03.04.1928 Hewett John R : Photographic Exposure Calculator
-
Patent:US1664946
03.04.1928 Robertson, William (P) NCR (P) : Cash register
-
Patent:US1664956
03.04.1928 von Pein, Edward (P) NCR (P) : Cash register
-
Patent:US1665527
10.04.1928 Lewis A. Brinkman : Pelorus
-
Patent:US1667449
24.04.1928 Fritz Wömpner A.W.Faber-Castell (P) : Magnifying device for slide rules
-
Patent:US1667812
01.05.1928 E. H. Miller : Calculator
-
Patent:US1668256
01.05.1928 E. C. Walter : Selecting Mechanism
-
Patent:US1668280
01.05.1928 Maschmann, Rudolph Frank W. Stellwagen : Perpetual calendar
-
Patent:US1668531
01.05.1928 Schmidt, Hermann (P) : Calculating Machine
-
Patent:US1669996
15.05.1928 Willi Naumann : Cash register
-
Patent:US1670018
15.05.1928 Bernau, Frederick (P) Ellis (P) Adding Typewriter Comp. : Automatic carriage-return mechanises
-
Patent:US1670512
22.05.1928 Andre Koronski, Heacock, Ralph (P) : Machine for calculating moments of inertia
-
Patent:US1671616
29.05.1928 E. A. Sperry : Logarithmic Calculator
-
Patent:US1672129
05.06.1928 Jack Kleinman Philip F. Shafran : Printing device
-
Patent:US1672882
12.06.1928 Charles H. Dudley Krippendorf Kalculator Comp. : Calculating machine
-
Patent:US1672950
12.06.1928 William B. Mittendorf Watson Experimental Laboratory Comp. : Chart for counting and computing scales
-
Patent:US1674157
19.06.1928 Christopher, Calvin F. : Calculating Device
-
Patent:US1675046
26.06.1928 W. G. Orth et al : Indicating Device for Automobiles and the like
-
Patent:US1676731
10.07.1928 J. Harrison : Denominating Machine
-
Patent:US1676912
10.07.1928 Meacham Frederick C : Device for calculating time
-
Patent:US1677897
24.07.1928 William W. Lasker Remington Rand (P) : Analyzer unit for tabulating machines
-
Patent:US1678019
24.07.1928 Oates Norford L : Calculating Device
-
Patent:US1678674
31.07.1928 Walter Koenig, Jr. American Telephone & Telegraph Comp. : Method and apparatus for computation
-
Patent:US1679265
31.07.1928 Perkins, Nathan W. (P), Ens, Emil John (P) Ellis (P) Adding Typewriter Comp. : Adding and subtracting accumulator
-
Patent:US1679380
07.08.1928 : Coding and decoding apparatus
-
Patent:US1679905
07.08.1928 Kassner, Ernst (P) : Resetting mechanism
-
Patent:US1680113
07.08.1928 A. H. Pitney et al : Printing and Registering Mechanism
-
Patent:US1680740
14.08.1928 Lake, Clair (P) Tabulating Machine (P) Company : Printing tabulator
-
Patent:US1681567
21.08.1928 Barrett, Glenn (P) Portable Adding Machine Comp. : Accumulator-control means of adding machines
-
Patent:US1681740
21.08.1928 Norman G. Meyers B.V.D. Comp. Inc. : Device for computing underwear sizes
-
Patent:US1682196
28.08.1928 Shipley, Bernis (P) NCR (P) : Cash register
-
Patent:US1682197
28.08.1928 Shipley, Bernis (P) NCR (P) : Cash register
-
Patent:US1682451
28.08.1928 Alfred Weiland Harold R. Russell Charles A. Mezger Remington (P) Rand Inc : Typewriter-key punch
-
Patent:US1682901
04.09.1928 Friden, Carl Mauritz Fredrick (P) : Reversing Mechanism
-
Patent:US1684001
11.09.1928 Alfred Weiland Harold R. Russell Charles A. Mezger Remington (P) Rand Inc : Alphabetical keyboard punch
-
Patent:US1684546
18.09.1928 Lasker, William Walter (P) Remington (P) Rand Inc : Carriage return and normalizing mechanism for card-perforating machines
-
Patent:US1685074
18.09.1928 Chase, George Clinton (P) : Multiplier Mechanism for Calculating Machines
-
Patent:US1685583
25.09.1928 George Browning : Computing machine
-
Patent:US1685685
25.09.1928 Smith, Abraham (P) : Bookkeeping machine
-
Patent:US1686351
02.10.1928 J. M. Spitzglass : Coal Meter
-
Patent:US1686843
09.10.1928 Walter B. Burke Domino System Co. : Handicapping device
-
Patent:US1688805
23.10.1928 Degener, Gustave O. (P) Royal Typewriter (P) Comp. : Adding attachment for typewriting machines
-
Patent:US1689651
30.10.1928 E. C. Walter : Selecting Mechanism for Calculating Machines
-
Patent:US1689983
30.10.1928 E. C. Walter : Selective Gear Transmission for Calculating Machines
-
Patent:US1690487
06.11.1928 Horton, Allen (P) Burroughs (P) : Attachment for calculating machines
-
Patent:US1690488
06.11.1928 Horton, Allen (P) Burroughs (P) : Cushioning mechanism for calculating machines
-
Patent:US1690651
06.11.1928 Schubode, Albert (P) Hannovera (P) Kassen-GmbH : Calculating machine
-
Patent:US1691104
13.11.1928 J. G. Zollman : Calculating Device
-
Patent:US1691761
13.11.1928 T. B. Harper : Device for Computing Interest
-
Patent:US1692293
20.11.1928 Lynden N. Davy : Zero-resetting device
-
Patent:US1692411
20.11.1928 Kassner, Ernst (P) : Check issuing and adding machine
-
Patent:US1692758
20.11.1928 Nogrady, Henry Alexander Weiss : Multiple-year calendar
-
Patent:US1693259
27.11.1928 Sundstrand, Oscar (P) Sundstrand (P) Corp. : Cash register
-
Patent:US1693279
27.11.1928 Walter J. Kreider NCR (P) : Cash register
-
Patent:US1693753
04.12.1928 Hart, Frederick (P) Remington (P) Accounting Machine Comp. : Computing machine
-
Patent:US1693766
04.12.1928 Schubode, Albert (P) Hannoverakassen GmbH : Calculating Machine
-
Patent:US1694009
04.12.1928 Goldberg, Maximilian Meyer (P) NCR (P) : Cash register
-
Patent:US1694362
04.12.1928 David Sundstrand Gustaf Sundstrand (P) : Adding and listing machine
-
Patent:US1694405
11.12.1928 N. Y. Troidl : Educational Appliance
-
Patent:US1694803
11.12.1928 Sundstrand, Oscar (P) Sundstrand (P) Corp. : Adding and listing machine
-
Patent:US1694877
11.12.1928 Le Roi E. Hutchings : Stock Indicating Device
-
Patent:US1764915
10.09.1928 Vethe, Anders (P) Addometer (Reliable) : calculating apparatus
-
Patent:US1940069
07.01.1928 Bair, Joseph H. (P) The Arithmetician, Bair-Fulton Co. York PA. : Calculating Machine