P

Inventor

SCHULLER RONALD A

8 patents
⚠️ This page may combine multiple inventors who share the name “SCHULLER RONALD A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

CORKEN INC

3 patents
US5431552AJul 11, 1995

Vane pump

CORKEN INC39 citations87
US5921274AJul 13, 1999

Internal relief and bypass valve for pumps and piping systems

CORKEN INC20 citations83
US6033196AMar 7, 2000

Rotary pump

CORKEN INC6 citations56

GEOSOURCE INC

2 patents
US4388050AJun 14, 1983

Manifold unit and assembly and fluid end assembly

GEOSOURCE INC80 citations94
US4179920ADec 25, 1979

Corrosion coupon holder apparatus

GEOSOURCE INC32 citations88

WHEATLEY CO

2 patents
US3942551AMar 9, 1976

Hydraulic damping means for hinged check valve

WHEATLEY CO59 citations88
US4033550AJul 5, 1977

Water gate valve

WHEATLEY CO29 citations76

SCHULLER RONALD A

1 patent
US4090529AMay 23, 1978

Clapper seal for check valves

SCHULLER RONALD A14 citations66