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Die große Enzyklopädie des mechanischen Rechnens

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Patente aus den USA 1988


  • Patent:US233840 01.00.1988 James S. Duret Richard B. Runyan : Calculator
  • Patent:US4737619 12.04.1988 John Freedom Thomas Freedom : Fertility calculator
  • Patent:US327970 00.05.1988 Lawrence W. Swem : Adding Machine
  • Patent:US317438 05.05.1988 Arthur M. Burnham Joseph R. Bodwell : Counting attachment for machines
  • Patent:US325260 09.05.1988 Walter H. Maxwell : Cash register and indicator
  • Patent:US352408 01.06.1988 George H. Harris : Calculator
  • Patent:US4749846 07.06.1988 Robert M. Deaver : Price comparison device
  • Patent:US4750398 14.06.1988 Rude, Kenneth L. (c/o George Spector, 233 Broadway RM 3615, : Chord speller
  • Patent:US4751373 14.06.1988 Ivey, Robert L. (14844 Sunset Blvd., Pacific Palisades, CA : Time period calculator
  • Patent:US4752674 21.06.1988 Zev Rosenwaks : Calculator used for displaying ovulation synchronization of donors and recipients in embryo transfer procedures
  • Patent:US4754125 28.06.1988 Penn, Roy A. (406 N. Citrus Ave., Los Angeles, CA 90036) : Time-tape calculator
  • Patent:US368163 08.07.1988 Daniel Orme Francis Heans Orme : Register for throstles and other spinning machines
  • Patent:US382552 05.08.1988 John H. Patterson : Cash indicator and register
  • Patent:US399129 03.09.1988 Franklin W. Brooks : Coin-operated calculating-machine
  • Patent:US4772780 20.09.1988 Reed, Muriel A. (6704 Hoover Rd., Indianapolis, IN 46260), : Slide calculator for photographic lighting
  • Patent:US4775779 04.10.1988 Fukute, Osamu (Inuyama, JP) : Slide rule for selecting material for constructing bearing
  • Patent:US4785164 15.11.1988 Reed, Muriel A. (6704 Hoover Rd., Indianapolis, IN 46260), : Slide calculator for background lighting


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