Inventor
BUTTERFIELD ERIC J
US9 patents
⚠️ This page may combine multiple inventors who share the name “BUTTERFIELD ERIC J”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
EMCO WHEATON
7 patentsUS4896705AJan 30, 1990
Containment manhole
EMCO WHEATON69 citations95
US4770317ASep 13, 1988
Automatic overfill prevention system
EMCO WHEATON68 citations95
US5027870AJul 2, 1991
Overfill prevention mechanism for storage tanks
EMCO WHEATON24 citations92
US4763806AAug 16, 1988
Containment manhole
EMCO WHEATON50 citations91
US4697624AOct 6, 1987
Vapor recovery nozzle
EMCO WHEATON32 citations91
US5549132AAug 27, 1996
Convertible fuel dispensing nozzle
EMCO WHEATON19 citations78
USD293462SDec 29, 1987
Fuel dispensing nozzle
EMCO WHEATON12 citations72