U.S. federal trademark · Serial No. 71417368 · Reg. No. 0370912
CROWN BLOCKS, TRAVELING BLOCKS, SWIVELS, ROTARY MACHINES, DRILL STEM BUSHINGS, DRAW WORKS, MULTIPLE PRIME MOVER, ROTARY DRILLING RIGS, SLUSH PUMPS, WELL PULLING MACHINE, DERRICKS, ALL OF THE ABOVE MENTIONED MACHINES BEING USED IN THE DRILLING OF OIL WELLS
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