Inventor · disambiguated record
Darrel Ralph
Also filed as: RALPH DARREL · RALPH DARREL J
4 granted patents·138 citations·filing 1992–2010
80Inventor score
Top patents by PatentIndex Score
4 records- 0189US7698821B2Lock mechanism for spring assisted folding knifeRALPH DARREL·Filed 2006·Granted Apr 20, 2010·47 cites·6 claims
- 0284US6427335B1Folding knife with open position lockCAMILLUS CUTLERY COMPANY·Filed 2001·Granted Aug 6, 2002·65 cites·11 claims
- 0379US8099870B1Lock mechanism for spring assisted folding knifeRALPH DARREL·Filed 2010·Granted Jan 24, 2012·13 cites·9 claims
- 0445US5320495APressure switch adaptor for well systemESSEF CORP·Filed 1992·Granted Jun 14, 1994·13 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →