U.S. federal trademark · Serial No. 77957619 · Reg. No. 3841459
custom manufacture of drill bits and drilling equipment in the field of oil field well drilling
design, development and engineering of drill bits and drilling equipment in the field of oil field well drilling
maintenance and repair of drill bits and drilling equipment in the field of oil field well drilling
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.