Inventor
BULL DAVID W
US11 patents
⚠️ This page may combine multiple inventors who share the name “BULL DAVID W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NARTRON CORP
10 patentsUS5828458AOct 27, 1998
Turbidity sensor
NARTRON CORP115 citations97
US4300026ANov 10, 1981
Electrical switch
NARTRON CORP62 citations94
US4290092ASep 15, 1981
Lamp assembly light shield and retaining means
NARTRON CORP13 citations72
US4204102AMay 20, 1980
Electrical switch
NARTRON CORP13 citations72
US5568118AOct 22, 1996
Failsafe module
NARTRON CORP6 citations71
US4283611AAug 11, 1981
Electrical switch
NARTRON CORP3 citations61
US4231082AOct 28, 1980
Lamp assembly light shield and retaining means
NARTRON CORP5 citations61
US4081633AMar 28, 1978
Multi-function electrical switch assembly
NARTRON CORP2 citations61
US5373281ADec 13, 1994
Failsafe module
NARTRON CORP3 citations60
US4126375ANov 21, 1978
Lens shield means
NARTRON CORP1 citations51