Inventor · disambiguated record
John C. Crumrine
Also filed as: CRUMRINE JOHN C · CRUMRINE JOHN D · RICHARDSON RAYMOND W
8 granted patents·1 pending application·429 citations·filing 1976–2004
90Inventor score
Top patents by PatentIndex Score
9 records- 0195US5816033ARiding lawn mower including a mower deck height control mechanismEXMARK MFG CO INC·Filed 1997·Granted Oct 6, 1998·118 cites·2 claims
- 0291US5987863ALawn mower having flow control baffles and removable mulching bafflesEXMARK MFG CO·Filed 1998·Granted Nov 23, 1999·65 cites·10 claims
- 0391US5845475ALawn mower having flow control baffles and removable mulching bafflesEXMARK MFG CO INC·Filed 1997·Granted Dec 8, 1998·60 cites·2 claims
- 0490US4204575AMethod of folding a plurality of wing sections of an articulated implementRICHARDSON MFG CO·Filed 1978·Granted May 27, 1980·43 cites·4 claims
- 0590US4133391AFolding flexible undercutter plowRICHARDSON MFG CO·Filed 1976·Granted Jan 9, 1979·43 cites·13 claims
- 0687US5865020ALawn mower having a low center of gravityEXMARK MFG CO·Filed 1997·Granted Feb 2, 1999·62 cites·2 claims
- 0784US4206816AFolding flexible undercutter plowRICHARDSON MFG CO·Filed 1978·Granted Jun 10, 1980·27 cites·1 claims
- 0861US4150725AImplement with compensation for terrain irregularitiesRICHARDSON MFG CO·Filed 1976·Granted Apr 24, 1979·11 cites·4 claims
- 0933US2006000787A1Purification of impure oil by centrifugationGALASSO LOUIS III·Filed 2004·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →