Inventor
CALDWELL DONALD J
US11 patents
⚠️ This page may combine multiple inventors who share the name “CALDWELL DONALD J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SNAP ON TOOLS CORP
5 patentsUS4777852AOct 18, 1988
Ratcheting screwdriver
SNAP ON TOOLS CORP96 citations93
USD309246SJul 17, 1990
Screwdriver
SNAP ON TOOLS CORP37 citations90
USD307236SApr 17, 1990
Screwdriver
SNAP ON TOOLS CORP34 citations90
US4845792AJul 11, 1989
Two-part adjustable approach ramp
SNAP ON TOOLS CORP36 citations89
US4994890AFeb 19, 1991
Rectifier structure with individual links
SNAP ON TOOLS CORP13 citations72