Inventor · disambiguated record
Willis H. Knippel
Also filed as: KNIPPEL WILLIS H
9 granted patents·124 citations·filing 1977–1980
89Inventor score
Files withPULLMAN INC9
Top patents by PatentIndex Score
9 records- 0170US4164188ASelf steering railway carPULLMAN INC·Filed 1977·Granted Aug 14, 1979·21 cites·26 claims
- 0265US4280778AHopper car door operating mechanismPULLMAN INC·Filed 1979·Granted Jul 28, 1981·17 cites·12 claims
- 0363US4291631ARailway car side discharge door locking arrangementPULLMAN INC·Filed 1979·Granted Sep 29, 1981·25 cites·13 claims
- 0457US4224875AStatic switching apparatus for passenger vehiclePULLMAN INC·Filed 1978·Granted Sep 30, 1980·14 cites·5 claims
- 0556US4213725ADouble locking door latch mechanism for railway hopper carsPULLMAN INC·Filed 1978·Granted Jul 22, 1980·13 cites·10 claims
- 0655US4339222ADoor locking mechanism for hopper car doorsPULLMAN INC·Filed 1980·Granted Jul 13, 1982·14 cites·10 claims
- 0750US4095371AOperating mechanism for box car sliding doorsPULLMAN INC·Filed 1977·Granted Jun 20, 1978·13 cites·10 claims
- 0838US4278382ADoor latch mechanism for bottom dump hopper carPULLMAN INC·Filed 1979·Granted Jul 14, 1981·5 cites·10 claims
- 0930US4295430ARailway hopper car latch mechanismPULLMAN INC·Filed 1980·Granted Oct 20, 1981·2 cites·10 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →