73227643
Mar 1, 1979
Dec 22, 1981
Wellhead Equipment-Namely, Steam Separators; Casing Heads; Casing Head Spools; Tubing Adapters, Tubing Hangers, and Tubing Heads; and Christmas Tree Assemblies and Parts Therefor
MachineryLiquid and Gas Line Control Equipment-Namely, Fluid Pressure Sensors; Fluid Actuators for Valves; and Automatic Valves
Electrical and Scientific Apparatus