U.S. federal trademark · Serial No. 75503337 · Reg. No. 2369891
Digital filter system comprised of a digital signal microprocessor, software providing a digital filter algorithm and programmable gate array circuitry used in the digital to analog conversion of music, as a feature of digital audio products such as compact disc players
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.