Inventor
DELFINO ALLAN B
US3 patents
Patents
3 patentsUS4487061ADec 11, 1984
Method and apparatus for detecting well pump-off
FMC CORP58 citations94
US4509901AApr 9, 1985
Method and apparatus for detecting problems in sucker-rod well pumps
FMC CORP65 citations93
US4483188ANov 20, 1984
Method and apparatus for recording and playback of dynagraphs for sucker-rod wells
FMC CORP44 citations93