Inventor · disambiguated record
Ludwig A. Perret
Also filed as: MILLER JAMES A · PERRET LUDWIG A
4 granted patents·82 citations·filing 1974–1975
78Inventor score
Files withBELL & HOWELL CO4
Top patents by PatentIndex Score
4 records- 0186US3972045AAircraft with television systemBELL & HOWELL CO·Filed 1974·Granted Jul 27, 1976·38 cites·4 claims
- 0274US4030128AVideo record scrambling and unscramblingBELL & HOWELL CO·Filed 1974·Granted Jun 14, 1977·17 cites·24 claims
- 0372US4185305AVideo information recording and reproducing methods and apparatusBELL & HOWELL CO·Filed 1975·Granted Jan 22, 1980·19 cites·50 claims
- 0451US3949425AVideo systemsBELL & HOWELL CO·Filed 1974·Granted Apr 6, 1976·8 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →