| HI-FLEX REED ROLLER BIT COMPANY
71579294 21 May 1949 | on 21 Feb 1994 | SCREW THREADS AND THREADED MEMBERS, SUCH AS JOINTS FOR DRILL PIPE CARR... Class 023 Class 023 Yarns and Threads SCREW THREADS AND THREADED MEMBERS, SUCH AS JOINTS FOR DRILL PIPE CARRYING DRILLING BITS AND CORE-TAKING EQUIPMENT, SUBS, REDUCING SUBSTITUTES, DRILL COLLARS, AND SIMILAR THREADED COUPLING ELEMENTS ON EQUIPMENT USED IN DEEP WELL DRILLING | | | GOLDEN CIRCLE REED ROLLER BIT COMPANY
72114046 20 Feb 1961 | on 29 Jul 1987 | PNEUMATIC TOOLS,PNEUMATIC TOOLS Class 023 Class 023 Yarns and Threads PNEUMATIC TOOLS | | | ROTO-TORQ REED ROLLER BIT COMPANY
72238562 10 Feb 1966 | on 06 Mar 1987 | TORQUE WRENCHES,TORQUE WRENCHES Class 023 Class 023 Yarns and Threads ROTO-TORQUE | |