U.S. federal trademark · Serial No. 87128075 · Reg. No. 1734514
Chemical drilling fluids for use in subterranean wells, namely, drilling muds, completion fluids, workover fluids and wellbore fluids; chemical additives for oil drilling fluids; drilling muds and chemical drilling fluids for use in oil well drilling
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.