Inventor
GROGAN ROBERT A
US7 patents
⚠️ This page may combine multiple inventors who share the name “GROGAN ROBERT A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
POWER TOOL HOLDERS INC
6 patentsUS5820136AOct 13, 1998
Quick release integrated collet and chuck device
POWER TOOL HOLDERS INC54 citations92
US6648342B2Nov 18, 2003
Chuck
POWER TOOL HOLDERS INC14 citations91
US6540236B2Apr 1, 2003
Chuck
POWER TOOL HOLDERS INC22 citations91
US6428018B1Aug 6, 2002
Chuck
POWER TOOL HOLDERS INC31 citations91
US6050741AApr 18, 2000
Tool clamping device
POWER TOOL HOLDERS INC29 citations91
US6402160B1Jun 11, 2002
Chuck with improved bearing
POWER TOOL HOLDERS INC15 citations83