Inventor · disambiguated record
C. Warren Duncan
Also filed as: DUNCAN C LEE · DUNCAN C WARREN
10 granted patents·1 pending application·497 citations·filing 1991–2010
92Inventor score
Top patents by PatentIndex Score
11 records- 0195US5074044ADust disposal attachment for a rotary element of a power toolDUNCAN C WARREN·Filed 1991·Granted Dec 24, 1991·123 cites·15 claims
- 0289US6238277B1Multidisc floor grinderFiled 1999·Granted May 29, 2001·100 cites·17 claims
- 0387US5791979AGrinding vacuum shroudFiled 1997·Granted Aug 11, 1998·82 cites·15 claims
- 0485US5782043ASeismic correction system for retrofitting structural columnsFiled 1996·Granted Jul 21, 1998·62 cites·11 claims
- 0579US7703856B1Manhole cover frame removal sawDUNCAN C WARREN·Filed 2006·Granted Apr 27, 2010·16 cites·12 claims
- 0679US7484578B2Hole coring systemU S SAWS INC·Filed 2006·Granted Feb 3, 2009·24 cites·27 claims
- 0774US7658242B2Hole coring system with lever armDUNCAN C WARREN·Filed 2008·Granted Feb 9, 2010·15 cites·18 claims
- 0872US5850889ASingle post safety anchorFiled 1997·Granted Dec 22, 1998·51 cites·17 claims
- 0969US8647030B2Core drilling system with torque shaftDUNCAN C WARREN·Filed 2010·Granted Feb 11, 2014·3 cites·10 claims
- 1069US7082656B1Pipe beveling systemDUNCAN C WARREN·Filed 2004·Granted Aug 1, 2006·21 cites·19 claims
- 1139US2004112028A1Mulching lawn mower blade assembly with replaceable insertsFiled 2003·Application pending·0 cites
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