73276766
Sep 5, 1980
Nov 16, 1982
Electrically and Hydraulically Operated Stud Tensioning Machines; Power Operated Drilling and Tunnelling Equipment-Namely, Rotary Tables and Bushings Thereof, Rotary Swivels, Draw Works, Hydraulic Rotary Top Drive Units for Turning Drill Pipes, Clamps, Tongs, Elevators, Mud Pumps, and Liner Compound Units and Machine Tools-Namely, Machines for Cutting, Bending, Milling, Threading, and Lathing
Machinery