Assignee
BELL & HOWELL JAPAN
28 granted patents·227 citations·filing 1974–1984
Top patents by PatentIndex Score
28 records- 0185US4047136AMoving magnet type instrumentBELL & HOWELL JAPAN·Filed 1976·Granted Sep 6, 1977·65 cites·7 claims
- 0266US3982826ACine cameraBELL & HOWELL JAPAN·Filed 1974·Granted Sep 28, 1976·7 cites·3 claims
- 0362US4136939ARangefinding optical systemBELL & HOWELL JAPAN·Filed 1977·Granted Jan 30, 1979·5 cites·14 claims
- 0461US4156563AAutomatic focus adjusting deviceBELL & HOWELL JAPAN·Filed 1978·Granted May 29, 1979·19 cites·4 claims
- 0560US4157217AAutomatic focus adjusting systemBELL & HOWELL JAPAN·Filed 1978·Granted Jun 5, 1979·18 cites·7 claims
- 0657US4093365AAutomatic focus adjusting deviceBELL & HOWELL JAPAN·Filed 1977·Granted Jun 6, 1978·16 cites·14 claims
- 0754US4531819ADevice for storing exposed film for photographing and developing apparatusBELL & HOWELL JAPAN·Filed 1984·Granted Jul 30, 1985·5 cites·11 claims
- 0851US4183640AAutomatic focus adjusting deviceBELL & HOWELL JAPAN·Filed 1978·Granted Jan 15, 1980·10 cites·10 claims
- 0951US4142785AExposure control circuit for cameraBELL & HOWELL JAPAN·Filed 1977·Granted Mar 6, 1979·3 cites·8 claims
- 1047US4070106AShort circuit for recording head of simultaneous recording cine cameraBELL & HOWELL JAPAN·Filed 1976·Granted Jan 24, 1978·3 cites·1 claims
- 1147US4052125AStarting and stopping device for sound motion picture cameraBELL & HOWELL JAPAN·Filed 1976·Granted Oct 4, 1977·3 cites·1 claims
- 1246US4233503AAutomatic focus adjusting systemBELL & HOWELL JAPAN·Filed 1979·Granted Nov 11, 1980·9 cites·19 claims
- 1346US3942882AFilm transport speed controlling deviceBELL & HOWELL JAPAN·Filed 1974·Granted Mar 9, 1976·3 cites·5 claims
- 1445US4159169AAutomatic focusing apparatusBELL & HOWELL JAPAN·Filed 1978·Granted Jun 26, 1979·8 cites·4 claims
- 1545US4146316AAutomatic focus adjusting systemBELL & HOWELL JAPAN·Filed 1978·Granted Mar 27, 1979·11 cites·10 claims
- 1644US4162123AAutomatic focusing systemBELL & HOWELL JAPAN·Filed 1977·Granted Jul 24, 1979·9 cites·7 claims
- 1743US4123765AAutomatic focus adjusting deviceBELL & HOWELL JAPAN·Filed 1977·Granted Oct 31, 1978·9 cites·10 claims
- 1839US4015119AUnder exposure and fade indicatorBELL & HOWELL JAPAN·Filed 1975·Granted Mar 29, 1977·2 cites·3 claims
- 1937US4171890ADichroic rangefinderBELL & HOWELL JAPAN·Filed 1977·Granted Oct 23, 1979·2 cites·2 claims
- 2036US3992305AShuttle speed control deviceBELL & HOWELL JAPAN·Filed 1975·Granted Nov 16, 1976·2 cites·3 claims
- 2135US4191882AAutomatic focus adjusting deviceBELL & HOWELL JAPAN·Filed 1978·Granted Mar 4, 1980·4 cites·8 claims
- 2235US4143952AAperture assemblyBELL & HOWELL JAPAN·Filed 1977·Granted Mar 13, 1979·2 cites·7 claims
- 2331US4174892AAutomatic focusing systemBELL & HOWELL JAPAN·Filed 1978·Granted Nov 20, 1979·4 cites·11 claims
- 2431US4125847ARangefinding mechanismBELL & HOWELL JAPAN·Filed 1977·Granted Nov 14, 1978·2 cites·11 claims
- 2530US3958868ASound system pinch roller actuating deviceBELL & HOWELL JAPAN·Filed 1975·Granted May 25, 1976·3 cites·5 claims
- 2624US4090783APinch roller actuating deviceBELL & HOWELL JAPAN·Filed 1976·Granted May 23, 1978·1 cites·5 claims
- 2719US4159868AFilm loop forming deviceBELL & HOWELL JAPAN·Filed 1978·Granted Jul 3, 1979·0 cites·8 claims
- 2818US4101843AAutomatic recording level control circuit with manual sensitivity compensating circuitBELL & HOWELL JAPAN·Filed 1976·Granted Jul 18, 1978·2 cites·10 claims
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