Inventor
PURFURST ERNEST H
US4 patents
⚠️ This page may combine multiple inventors who share the name “PURFURST ERNEST H”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HALLIBURTON CO
3 patentsUS4745802AMay 24, 1988
Formation testing tool and method of obtaining post-test drawdown and pressure readings
HALLIBURTON CO116 citations93
US4593560AJun 10, 1986
Push-off pistons
HALLIBURTON CO34 citations89
US4671322AJun 9, 1987
Sequential formation tester having three way normally closed valve
HALLIBURTON CO13 citations70