Inventor
DUNCAN C WARREN
US10 patents
⚠️ This page may combine multiple inventors who share the name “DUNCAN C WARREN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
DUNCAN C WARREN
5 patentsUS5074044ADec 24, 1991
Dust disposal attachment for a rotary element of a power tool
DUNCAN C WARREN123 citations96
US7082656B1Aug 1, 2006
Pipe beveling system
DUNCAN C WARREN21 citations83
US7703856B1Apr 27, 2010
Manhole cover frame removal saw
DUNCAN C WARREN16 citations82
US7658242B2Feb 9, 2010
Hole coring system with lever arm
DUNCAN C WARREN15 citations82
US8647030B2Feb 11, 2014
Core drilling system with torque shaft
DUNCAN C WARREN3 citations61