U.S. federal trademark · Serial No. 75143576 · Reg. No. 2289192
audio equipment, namely, speaker systems, headphone systems, and recording apparatus, comprising amplifiers, filters, cross-talk cancelers, and/or microchips containing circuits for processing audio signals * and/or computer programs for processing audio signals * for producing three-dimensional sound
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.