U.S. federal trademark · Serial No. 73182612 · Reg. No. 1124637
[ APPARATUS FOR MACHINE DRILLING OF EARTH AND ROCK-NAMELY, DRILL RODS, DRILL TUBES, DRILL BITS, ECCENTRIC DRILL BITS WITH ECCENTRICALLY WORKING REAMER BIT AND CENTRIC PILOT BIT, WELL DRILLING BITS, ] INTEGRAL DRILL STEELS [, DRILL STEELS FOR EARTH DRILLING, EXTENSION DRILL RODS, EXTENSION DRILL TUBES, CASING TUBES EXTENSION SLEEVES AND GUIDE SLEEVES FOR DRILL RODS AND DRILL TUBES ]
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