U.S. federal trademark · Serial No. 79101158 · Reg. No. 4181364
Amplifiers; electronic amplifiers; electronic control circuits and circuit boards for use with amplifiers; transformers for isolating amplifying valves; transformers for monitoring amplifying valves; electronic amplifying valves; automatic amplifying valves
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.