Inventor · disambiguated record
Ralph B. Clark
Also filed as: CLARK RALPH B
4 granted patents·124 citations·filing 1975–2002
80Inventor score
Top patents by PatentIndex Score
4 records- 0191US4041804ALimited slip differential with clutch control meansCATERPILLAR TRACTOR CO·Filed 1976·Granted Aug 16, 1977·51 cites·5 claims
- 0284US3976154ADrive line differential apparatus for a vehicleCATERPILLAR TRACTOR CO·Filed 1975·Granted Aug 24, 1976·46 cites·6 claims
- 0354USD472293SFish lure having a weighted ornamented head and multifilamentous trailing skirtCLARK RALPH B·Filed 2002·Granted Mar 25, 2003·12 cites·1 claims
- 0453US5628811AMethod of ameliorating acid soil to enhance plant growthDRAVO LIME CO·Filed 1994·Granted May 13, 1997·15 cites·11 claims
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