Assignee
DUNCAN C WARREN
5 granted patents·178 citations·filing 1991–2010
Top patents by PatentIndex Score
5 records- 0195US5074044ADust disposal attachment for a rotary element of a power toolDUNCAN C WARREN·Filed 1991·Granted Dec 24, 1991·123 cites·15 claims
- 0279US7703856B1Manhole cover frame removal sawDUNCAN C WARREN·Filed 2006·Granted Apr 27, 2010·16 cites·12 claims
- 0374US7658242B2Hole coring system with lever armDUNCAN C WARREN·Filed 2008·Granted Feb 9, 2010·15 cites·18 claims
- 0469US8647030B2Core drilling system with torque shaftDUNCAN C WARREN·Filed 2010·Granted Feb 11, 2014·3 cites·10 claims
- 0569US7082656B1Pipe beveling systemDUNCAN C WARREN·Filed 2004·Granted Aug 1, 2006·21 cites·19 claims
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