Patente aus den USA 1897
- Patent:US574703 05.01.1897 J. Bloch : Chronological Skeleton Chart
- Patent:US575105 12.01.1897 B. E. Chollar : Planimeter
- Patent:US575287 12.01.1897 C. H. Redding : Adding Machine
- Patent:US575372 19.01.1897 Pottin, Henry : Cash Register and Recorder
- Patent:US575570 19.01.1897 H. Marshall : Combined type writing and computing machine
- Patent:US578303 02.03.1897 J. C. Wolfe : Type Writing and Adding Machine
- Patent:US578557 09.03.1897 H. H. Freer & C. MacCallum : Sales Indicating Tablet
- Patent:US578906 16.03.1897 Frank B. Wood Brunswick-Balke-Collender Comp. : Pool-game counter
- Patent:US579047 16.03.1897 G. W. Dudley : Type Writing Attachement for Adding Machine
- Patent:US579048 16.03.1897 G. W. Dudley : Type Writing Attachement for Adding Machine
- Patent:US588409 17.03.1897 Ensworth, William J. : Adding machine
- Patent:US618427 05.04.1897 J. B. Moore : Calculating Machine
- Patent:US580378 13.04.1897 Cleal, Joseph P., Frank A. Reinhard NCR : Cash-register
- Patent:US580464 13.04.1897 M. J. Overell : Ready Calculator
- Patent:US580516 13.04.1897 B. S. Andrew : Abacus
- Patent:US580863 20.04.1897 Hiett, De Kernia James Thomas : Calculating Machine
- Patent:US582366 11.05.1897 Ohmer, John Tyler, Hiram : Fare-register
- Patent:US582634 18.05.1897 Eugene B. Frew : Calculating-machine
- Patent:US583192 25.05.1897 G. O. Brager : Cash Register, Indicator, and Adding Machine
- Patent:US584458 15.06.1897 Harold W. Byron : Computing-machine
- Patent:US584670 15.06.1897 J. L. Cathcart : Interest and Time Indicator
- Patent:US584955 22.06.1897 Mcleod, George Alfred : Calendar
- Patent:US585468 29.06.1897 Fuller, Frederick : Cash Register
- Patent:US585565 29.06.1897 Fuller, Frederick : Cash Register
- Patent:US585996 06.07.1897 F. Woodbridge : Cash Register and Recorder
- Patent:US587042 27.07.1897 A. Macauley : Cash Register
- Patent:US587599 03.08.1897 T. ODonnell : Coin Holder and Register
- Patent:US587702 10.08.1897 Carney, Thomas NCR : Cash register
- Patent:US588127 17.08.1897 Carney, Thomas NCR : Cash register and recorder
- Patent:US588260 17.08.1897 Bigelow, Charles H. : Adding machine
- Patent:US589114 31.08.1897 Bickford, Frank H. NCR : Cash Register
- Patent:US589245 31.08.1897 Carney, Thomas NCR : Cash register
- Patent:US590097 14.09.1897 Ensworth, William J. Galbraith, John W. : Adding-machine
- Patent:US590277 21.09.1897 Francis H. Richards : Adding Machine
- Patent:US590772 28.09.1897 William Henry Pike Jr American Arithmometer Co. : Device for duplicate printing
- Patent:US591900 19.10.1897 T. A. Trent, Jr. : Typographical Adding Machine
- Patent:US592067 19.10.1897 R. C. Smith : Calculating Scale
- Patent:US592723 26.10.1897 Brown, William W. : Adding-pencil
- Patent:US593675 16.11.1897 Minnis, Henry M. : Calculating machine
- Patent:US593715 16.11.1897 Bigelow, Charles H. : Adding register
- Patent:US593773 16.11.1897 Miehle, Robert : Counting machine
- Patent:US594032 23.11.1897 McClellan : Compund Harmonic Movement for Machines
- Patent:US594734 30.11.1897 Giguere, Thomas Filiase Dyon : Adding-machine
- Patent:US595009 07.12.1897 Williams, Elmer V. und Williams, Edwin G. und Dickinson, Charles L. : Calculating machine
- Patent:US595347 14.12.1897 Abraham Schabadt : Calculating-machine
- Patent:US595592 14.12.1897 G. L. Ault : Adding Machine
- Patent:US595603 14.12.1897 John Byrne : Calculating machine
- Patent:US595864 21.12.1897 W. H. Pike, Jr. : Printing Attachement for Calculating Machines
- Patent:US596359 28.12.1897 Clark, William H. Rochester Cash Register Company : Cash register, indicator, and check printer
- Patent:US596360 28.12.1897 Clark, William H. Rochester Cash Register Company : Key mechanism for cash registers
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