Inventor · disambiguated record
Charles J. Watson
Also filed as: HRASTNIK WALTER · WATSON CHARLES J
8 granted patents·130 citations·filing 1974–1998
86Inventor score
Top patents by PatentIndex Score
8 records- 0192US6068672AFuel additive delivery systemWALBRO CORP·Filed 1998·Granted May 30, 2000·75 cites·19 claims
- 0273US4045136AControl system for photographic film printersBELL & HOWELL CO·Filed 1975·Granted Aug 30, 1977·10 cites·31 claims
- 0372US4009959AExposure control unitBELL & HOWELL CO·Filed 1975·Granted Mar 1, 1977·11 cites·26 claims
- 0470US4108537ALight valve system for motion picture film printerBELL & HOWELL CO·Filed 1976·Granted Aug 22, 1978·24 cites·22 claims
- 0554US4072419AFrame count cuer for photographic film printersBELL & HOWELL CO·Filed 1974·Granted Feb 7, 1978·4 cites·16 claims
- 0638US4154528APhotographic film printerBELL & HOWELL CO·Filed 1978·Granted May 15, 1979·2 cites·29 claims
- 0737US4488807ALight valve/fader and control circuitBELL & HOWELL CO·Filed 1982·Granted Dec 18, 1984·2 cites·6 claims
- 0827US4180321AControl system for photographic film printerBELL & HOWELL CO·Filed 1978·Granted Dec 25, 1979·2 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →