U.S. federal trademark · Serial No. 78881468 · Reg. No. 3424572
Audio amplifier designed to transmit and amplify speech sounds from the user's mouth to the user's ear or to amplify a speaker's voice into a another listener's ear for the improvement of auditory processing in areas of speech, sound recognition and reading
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.