73234518
Oct 9, 1979
Oct 13, 1981
Steel Cylinders Used as Liners for Oil Well Mud Pumps and Cement Pumps, Centrifugal Pumps for Pumping Oil Well Fluids, and Reciprocating Valves and Pistons for Mud Pumps
MachineryReplacement Rubber Sealing Elements for Stem Valves and Replacement Rubber Piston Elements for Reciprocating Pistons
Rubber Goods