Inventor
FRENZEL ROBERT A
US5 patents
⚠️ This page may combine multiple inventors who share the name “FRENZEL ROBERT A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
KEYSTONE INT
4 patentsUS5054374AOct 8, 1991
Rotary actuator
KEYSTONE INT50 citations91
US5007330AApr 16, 1991
Rotary actuator and seal assembly for use therein
KEYSTONE INT45 citations91
US5427354AJun 27, 1995
Valve assembly
KEYSTONE INT9 citations71
US5388806AFeb 14, 1995
Valve assembly having improved valve seat
KEYSTONE INT18 citations71