U.S. federal trademark · Serial No. 76415360 · Reg. No. 2774815
POWER OPERATED ROTARY EARTH BORING DRILL BITS FEATURING TUNGSTEN CARBIDE INSERT CUTTING ELEMENTS, TUNGSTEN CARBIDE AND HARDMETAL/HARD MATERIAL WEAR PROTECTION, AND USING OPEN, AIR-COOLED OR SEALED, ROLLER-OR-FRICTION-TYPE BEARING SYSTEMS
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