U.S. federal trademark · Serial No. 85731185 · Reg. No. 4442387
OIL DRILLING EQUIPMENT, NAMELY, NON-ROTATING DRILL PIPE PROTECTORS COMPRISING A POLYURETHANE SLEEVE AND STOPS COLLARS; COILED TUBING TRACTORS COMPRISING TWO GRIPPER AND PISTON ASSEMBLIES FOR PULLING DRILL PIPE DOWNHOLE, OIL DRILLING EQUIPMENT, NAMELY, ANTI-STALL TOOLS, NAMELY, A TOOL IN THE DRILL STRING HAVING HYDRAULICS VALVES TO PREVENT DRILLING MOTOR STALL, AND CIRCULATION SUBS COMPRISING A TOOL IN THE DRILL STRING HAVING HYDRAULICS VALVES TO DIRECT DRILLING FLUID INTO THE DRILLING ANNULUS
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