75603715
Dec 11, 1998
WELL COMPLETION AND PRODUCTION EQUIPMENT, NAMELY PACKERS, GAS LIFT VALVES, SIDEPOCKET MANDRELS, SLIDING SLEEVES, THERMAL EXPANSION JOINTS, LOCKING MANDRELS, LANDING NIPPLES, AND SEAL ASSEMBLIES
MachineryWELL COMPLETION AND PRODUCTION EQUIPMENT, NAMELY SAFETY VALVES FOR FLOW SHUTOFF
Electrical and Scientific Apparatus