Patent
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Patent:US640825
09.01.1900 Elijah F. Spaulding Ideal Cash Register Comp. : Cash Register
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Patent:US640850
09.01.1900 Byron Work Gardner Work : Adding machine
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Patent:US640966
09.01.1900 Elijah F. Spaulding Ideal Cash Register Comp. : Cash register
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Patent:US641065
09.01.1900 Baldwin, Frank Stephen (P) : Calculating-machine
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Patent:US641285
16.01.1900 Gardy, Henry D. (P) und Burke, Taylor C. (P) : Pocket Cash Register
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Patent:US641294
16.01.1900 Arpád Horváth : System of calculating
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Patent:US641363
16.01.1900 J. E. Blacker : Adding Machine
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Patent:US641433
16.01.1900 Buell, Salmon A. : Adjustable perpetual calendar
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Patent:US641517
16.01.1900 Charles E. Keel : Automatic computing machine
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Patent:US642713
06.02.1900 John Pfeifer Mast, Foos und Comp. : Cash register and indicator
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Patent:US644165
27.02.1900 W. A. Freret, Jr. : Cryptographic Type Writing Machine
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Patent:US644287
27.02.1900 Felt, Dorr E. (P) : Tabulating Machine
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Patent:US644967
06.03.1900 Byrne, Hugh H. (P) : Game-counter
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Patent:US646564
03.04.1900 Elijah F. Spaulding Ideal Cash Register Comp. : Cash Register
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Patent:US646599
03.04.1900 Gilbert W. Chapin : Adding Machine
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Patent:US646757
03.04.1900 Ohmer, John (P) Ohmer (P) Car Register Comp. : Fare-recorder
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Patent:US647238
10.04.1900 William P. Shattuck : Computing and listing machine
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Patent:US647867
17.04.1900 A. L. Patterson : Drawing Implement
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Patent:US648125
24.04.1900 Heinitz, Woldemar (P) : Operating device for calculating machines, cash registers, etc.
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Patent:US648126
24.04.1900 Richard Henning Joseph Pallweber Adolf Kolbe : Cash register or adding machine
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Patent:US648576
01.05.1900 W. B. Taylor : Extensible Measuring Rule
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Patent:US648708
01.05.1900 Platt, Corwin H. (P) American Arithmometer Comp. : Paper carrying and feeding attachment for adding machines
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Patent:US649522
15.05.1900 J. Mallmann : Calculating Machine
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Patent:US650066
22.05.1900 Küttner, Wilhelm; "William Küttner" : Calculating machine
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Patent:US651142
05.06.1900 Keuffel, William (P) Keuffel und Esser (P) Comp. : Slide rule
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Patent:US653250
10.07.1900 Lafond, Georges (P) : Register
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Patent:US654181
24.07.1900 Rinsche, Frank Charles (P) : Calculating Machine
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Patent:US654226
24.07.1900 Carrol, Thomas (P) NCR (P) : Cash Register
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Patent:US654674
31.07.1900 George M. Rickard : Computing device
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Patent:US654992
31.07.1900 Holmes Marshall National Addograph Comp. : Combined type-writing and computing machine
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Patent:US655027
31.07.1900 Smith, Walter : Computing Device
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Patent:US655653
07.08.1900 George J. Gnau : Calculator
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Patent:US657266
04.09.1900 Dennis, A.S. (P) Bankers Adding & Recording Machine Co. : Typographical Adding Machine
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Patent:US657674
11.09.1900 W. G. Powell : Calculating Machine
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Patent:US657916
18.09.1900 Roger W. Conant : Calculating Instrument
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Patent:US658258
18.09.1900 Robert J. Hagey : Exposure-scale for photographers
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Patent:US658828
02.10.1900 Brandt, Edward J. (P) : Coin delivery machine
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Patent:US659407
09.10.1900 C. T. Meredith : Machine for computing Numbers
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Patent:US659835
16.10.1900 Luther B. Thomas : Calculator
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Patent:US660108
23.10.1900 Hoch, Adam (P) : Adding machine
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Patent:US661058
06.11.1900 Labofish, Charles S. (P) : Calculating device for type-writers
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Patent:US661096
06.11.1900 Francis Alan Wilkinson Claud Carew Gibson : Calculating apparatus
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Patent:US661121
06.11.1900 Felt, Dorr E. (P) : Calculating Machine
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Patent:US661756
13.11.1900 H. Claassen : Apparatus for Controlling the Boiling of Sugar Juices
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Patent:US662899
27.11.1900 Winn, Henry (P); Spalding, Chester M.]] : Counting-register
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Patent:US663890
18.12.1900 Hanson, Hans J. (P) : Calculating Machine
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Patent:US663891
18.12.1900 Hanson, Hans J. (P) : Computing machine
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Patent:US674883
08.03.1900 Smith, Albert (P) Computing Scale Company (P) Dayton, Ohio : Weight and price indicating scale
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Patent:US771289
24.11.1900 Whitehouse, H.B. (P) : INDEX-CARD HOLDER FOR CASH-REGISTERS.