Inventor
EINEICHNER DONALD E
US4 patents
Patents
4 patentsUS4594665AJun 10, 1986
Well production control system
FMC CORP60 citations91
US4274783AJun 23, 1981
Chain measuring and conveyor control system
FMC CORP44 citations91
US4509365AApr 9, 1985
Method and apparatus for weighing a sucker-rod pumped well
FMC CORP24 citations78
US4198758AApr 22, 1980
Chain measuring and conveyor control system
FMC CORP13 citations72