Patente aus den USA 1893
- Patent:US489383 03.01.1893 Melvin N. Lovell Lovell Mfg. Comp. : Cash register and indicator
- Patent:US490304 24.01.1893 Harry M. Neer O.W. Kelly Thomas Reynolds : Cash register
- Patent:US490898 31.01.1893 Carney, Thomas NCR : Cash register and indicator
- Patent:US491022 31.01.1893 Francis C. Osborn George Maitland Joseph A. Marsh : Cash-register
- Patent:US491537 14.02.1893 Walter N. Durant : Counting-register
- Patent:US492142 21.02.1893 H. R. Corkhill Jr. : Ellipsograph
- Patent:US492677 28.02.1893 Richard Harte : Cryptographic instrument
- Patent:US493117 07.03.1893 William Adams Ritchie Edward F. Maritz, Sr. : Adding and registering machine
- Patent:US493971 21.03.1893 A. J. Brooks : Adding Machine
- Patent:US494618 04.04.1893 O. Beher : Adding Machine
- Patent:US496169 25.04.1893 Hugh C. Pritchard NCR : Cash register and indicator
- Patent:US496339 25.04.1893 Clark, William Erie Cash Register Comp. : Cash-register mechanism
- Patent:US496340 25.04.1893 Clark, William Erie Cash Register Comp. : Key-locking and key-coupling mechanism for cash-registers
- Patent:US496341 25.04.1893 Clark, William Erie Cash Register Comp. : Cash-register
- Patent:US496562 02.05.1893 Goodman, John : Planimeter
- Patent:US496993 09.05.1893 H. C. Bristol : Educational Appliance
- Patent:US497058 09.05.1893 B. H. Phillips : Adding Machine
- Patent:US497860 23.05.1893 Carney, Thomas NCR : Cash register and indicator
- Patent:US497861 23.05.1893 Carney, Thomas NCR : Cash-register
- Patent:US498728 30.05.1893 John James Range Edward N. Foote Boston Cash Register Comp. : Cash-registering machine
- Patent:US499218 13.06.1893 Charles C. Fields Bristol Novelty Comp. : Game-counter
- Patent:US499294 13.06.1893 Charles A. Juengst Lamson Consolidated Store Service Comp. : Cash register and indicator
- Patent:US515228 16.06.1893 Huizer, Samuel Leendert : Adding-machine
- Patent:US500202 27.06.1893 Goodman, John : Planimeter
- Patent:US500919 04.07.1893 Lockwood, Thomas J. National Cash Register Comp. : Adding device and register
- Patent:US501379 11.07.1893 H. Steward : Abacus Attachment for Slates
- Patent:US501596 18.07.1893 Emil Bersbach Albert Wm. Zietlow Columbian Register Comp. : Pocket-counter for miscellaneous items
- Patent:US502184 25.07.1893 Gallegos, José : Device for teaching arithmetical calculations
- Patent:US502217 25.07.1893 Albert, David L. : Mechanical calculating device
- Patent:US502425 01.08.1893 J. Sawyer : Multiplying Machine
- Patent:US503986 29.08.1893 G. Richmond : Calculating and Recording Machine
- Patent:US514785 31.08.1893 Strayer, George D. : Adding-machine
- Patent:US504776 12.09.1893 James S. Duret : Calculating device
- Patent:US504963 12.09.1893 Burroughs, William S. : Calculating Machine
- Patent:US505078 12.09.1893 Burroughs, William S. : Recording Device for Calculators, &c
- Patent:US506003 03.10.1893 Dreyfus, George : Perpetual calendar
- Patent:US506471 10.10.1893 Clark, William Erie Cash Register Comp. : Cash-register
- Patent:US507120 24.10.1893 Charles F. Hamilton : Cash-register
- Patent:US507810 31.10.1893 Gubelmann, William S. : Adding Machine
- Patent:US508417 14.11.1893 A. M. Grubbs : Addition Pencil
- Patent:US508435 14.11.1893 Charles A. Miller : Adding device
- Patent:US508450 14.11.1893 T. A. Trent, Jr. : Adding Machine
- Patent:US509660 28.11.1893 George W. Grove NCR : Check-ejector for check-printing cash-registers
- Patent:US509722 28.11.1893 Dalton, Levi C. und Myatt, George C. : Adding-machine
- Patent:US510522 12.12.1893 F. Shanisey : Adding Machine
- Patent:US510927 19.12.1893 W. A. Neal : Adding and Registering Machine
- Patent:US511322 26.12.1893 J. B. Benton : Register and Calculator
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