Inventor · disambiguated record
Douglas C. Appel
Also filed as: APPEL DOUGLAS C · BABISH JOHN A
6 granted patents·134 citations·filing 1976–1978
85Inventor score
Top patents by PatentIndex Score
6 records- 0189US4109703AEngine cooling system flushing apparatus and methodWYNN OIL CO·Filed 1976·Granted Aug 29, 1978·34 cites·18 claims
- 0287US4083399AValving for engine cooling system flushing apparatus and methodWYNN OIL CO·Filed 1977·Granted Apr 11, 1978·32 cites·21 claims
- 0376US4293031AEngine cooling system flushing apparatus and methodWYNN OIL CO·Filed 1978·Granted Oct 6, 1981·27 cites·1 claims
- 0470US4178134AEngine coolant system flush attachment for coolant hoseWYNN OIL·Filed 1978·Granted Dec 11, 1979·23 cites·13 claims
- 0561US4209063AEngine cooling system flushing apparatus and methodWYNN OIL·Filed 1977·Granted Jun 24, 1980·15 cites·4 claims
- 0634US4091865AAir-pressurized, safety anti-freeze tankWYNN OIL CO·Filed 1977·Granted May 30, 1978·3 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →