Inventor
CLARKSON CURTIS W
US8 patents
⚠️ This page may combine multiple inventors who share the name “CLARKSON CURTIS W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
CLARKSON CO
6 patentsUS4257447AMar 24, 1981
Gate valve
CLARKSON CO59 citations94
US5890700AApr 6, 1999
Gate valve
CLARKSON CO64 citations93
US5271426ADec 21, 1993
Gate valve
CLARKSON CO79 citations93
US4688597AAug 25, 1987
Gate valve
CLARKSON CO58 citations93
US4846442AJul 11, 1989
Gate valve with lock ring
CLARKSON CO32 citations90
US5370149ADec 6, 1994
Line blind valve
CLARKSON CO38 citations89