U.S. federal trademark · Serial No. 74618221
analog and digital audio frequency amplifiers, namely, audio frequency output amplifiers, -headphone amplifiers, -control amplifiers, audio frequency equilizers, -processing apparatus, -switches, delaying apparatus, -alienation apparatus, -mixing apparatus, -display apparatus, -intercom apparatus
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.