Inventor · disambiguated record
Richard Frystak
Also filed as: FRYSTAK RICHARD
5 granted patents·30 citations·filing 1976–1989
76Inventor score
Files withBELL & HOWELL CO5
Top patents by PatentIndex Score
5 records- 0168US4049257ADocument feeder apparatusBELL & HOWELL CO·Filed 1976·Granted Sep 20, 1977·17 cites·10 claims
- 0239US4984008AFilm number writing systemBELL & HOWELL CO·Filed 1989·Granted Jan 8, 1991·3 cites·19 claims
- 0337US4960273ADual mode document feederBELL & HOWELL CO·Filed 1989·Granted Oct 2, 1990·6 cites·18 claims
- 0432US4448364AReversible ribbon driveBELL & HOWELL CO·Filed 1982·Granted May 15, 1984·2 cites·4 claims
- 0520US4484521ADate band indexing mechanism for endorserBELL & HOWELL CO·Filed 1983·Granted Nov 27, 1984·2 cites·15 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →