U.S. federal trademark · Serial No. 73788053 · Reg. No. 1594860
DRILL PIPE, DRILL COLLARS, KELLYS, HEAVYWEIGHT DRILL PIPE, MANUALLY OPERATED KELLY VALVES, ROTARY SUB PIPE, AND MANUALLY OPERATED WIRELINE VALVES
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.