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Patent
Patentdatenbank USA 1888
- Patent:US377823 14.02.1888 Frederick L. Bancroft : Calculating-machine
- Patent:US378257 21.02.1888 Alexander J. Leschorn : Instrument for trigonometrical computations
- Patent:US384431 12.06.1888 Dunham, Calvin : Interest Calculator
- Patent:US387422 07.08.1888 Ferdinand King : Game-counter
- Patent:US388518 28.08.1888 Yoe, Philip (P) : Indicating and calculating machine
- Patent:US391088 23.06.1888 Seymour, James C. : Adding-machine
- Patent:US393478 27.11.1888 Carl Lorenz : Calculating-machine
- Patent:US405924 10.07.1888 Stinson, James C. : Adding-machine