U.S. federal trademark · Serial No. 73698865 · Reg. No. 486362
CHEMICAL ADDITIVES FOR DRILLING FLUIDS USED IN THE OIL WELL DRILLING INDUSTRY
PETROLEUM-BASED ADDITIVES FOR DRILLING FLUIDS USED IN THE OIL WELL DRILLING INDUSTRY
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.