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Inventor

SIMPSON DONALD C

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

DRESSER IND

3 patents
US5257639ANov 2, 1993

Electropneumatic positioner

DRESSER IND40 citations89
US5159949ANov 3, 1992

Electropneumatic positioner

DRESSER IND25 citations89
US4527583AJul 9, 1985

Electropneumatic transducer system

DRESSER IND18 citations71

SIMPSON DONALD C

2 patents
USD291917SSep 15, 1987

Disposable cushion pad for intra-oral X-ray films

SIMPSON DONALD C3 citations58
USD290652SJun 30, 1987

Cushion pad for intra-oral X-ray films

SIMPSON DONALD C3 citations58

FOXBORO CO

1 patent
US4118977AOct 10, 1978

Electric signal transmitter for vibrating-wire sensor

FOXBORO CO14 citations73

CROIX JAMES R

1 patent
US4165652AAug 28, 1979

Vibratable-wire instrument having an improved temperature compensating technique

CROIX JAMES R14 citations66