U.S. federal trademark · Serial No. 78343508 · Reg. No. 2986429
Electron tubes; sockets and probes for testing electron tubes; current meters; power attenuators; speaker emulators; audio amplifiers; power boosters; adapters for adjusting the operating levels of electron tubes; capacitors
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.