U.S. federal trademark · Serial No. 97097214 · Reg. No. 6916475
Equipment for use in the construction of subterranean oil and gas wells being drill pipe systems comprised of metal drill pipe, casing strings and liner strings for oil and gas wells and inside the drill pipe is an inner metal liner pipe with an insulated electrical conductor which provides electric power and communication channel, each type of pipe and the electrical conductor all sold together as a unit
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.