Inventor · disambiguated record
Donald M. Townsend
Also filed as: TOWNSEND DONALD M
3 granted patents·168 citations·filing 1985–1991
77Inventor score
Technology areasF23J
Files withSIMPSON DURA VENT COMPANY INC3
Top patents by PatentIndex Score
3 records- 0191US4846147AChimney liner systemSIMPSON DURA VENT COMPANY INC·Filed 1987·Granted Jul 11, 1989·79 cites·16 claims
- 0282US5165732AGas appliance connectionSIMPSON DURA VENT COMPANY INC·Filed 1991·Granted Nov 24, 1992·55 cites·11 claims
- 0375US4608963AThermally balanced air flow chimneySIMPSON DURA VENT COMPANY INC·Filed 1985·Granted Sep 2, 1986·34 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →