Inventor · disambiguated record
Roger E. Doerfler
Also filed as: DOERFLER ROGER E
5 granted patents·39 citations·filing 1974–1978
78Inventor score
Files withKELSEY HAYES CO5
Top patents by PatentIndex Score
5 records- 0160US3937523AProportioning brake control device with bypassKELSEY HAYES CO·Filed 1974·Granted Feb 10, 1976·16 cites·31 claims
- 0257US4221437ABrake proportioning apparatusKELSEY HAYES CO·Filed 1978·Granted Sep 9, 1980·8 cites·13 claims
- 0351US4068900ABlend back proportioning brake control apparatusKELSEY HAYES CO·Filed 1976·Granted Jan 17, 1978·7 cites·11 claims
- 0440US3985986ADifferential pressure warning switchKELSEY HAYES CO·Filed 1974·Granted Oct 12, 1976·5 cites·16 claims
- 0534US3980345AMetering and proportioning valve mechanismKELSEY HAYES CO·Filed 1975·Granted Sep 14, 1976·3 cites·14 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →