Inventor · disambiguated record
Warren D. Knowles
Also filed as: KNOWLES WARREN D · KNOWLES WARREN DEAN
4 granted patents·16 citations·filing 1976–1980
70Inventor score
Technology areasD05B
Files withSINGER CO4
Top patents by PatentIndex Score
4 records- 0164US4213411AReadily attachable and detachable sole plate for a sewing machineSINGER CO·Filed 1979·Granted Jul 22, 1980·8 cites·6 claims
- 0246US4183311ASnap-on presser foot plateSINGER CO·Filed 1979·Granted Jan 15, 1980·4 cites·7 claims
- 0335US4092939ATension disc assemblySINGER CO·Filed 1976·Granted Jun 6, 1978·2 cites·6 claims
- 0433US4242975ANeedle support meansSINGER CO·Filed 1980·Granted Jan 6, 1981·2 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →