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