U.S. federal trademark · Serial No. 74096997
electrical fault prevention units primarily for use in communications to electrical power stations; namely, electrical fault prevention units installed between incoming phone lines and internal phone equipment, having a non-conductive fiber optic link connecting each incoming conductive phone line to a corresponding conductive phone line in a power station
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.