U.S. federal trademark · Serial No. 73250097 · Reg. No. 1177141
Digital Electronic Chord Logic System for Use in an Electronic Keyboard Musical Instrument, which Enables the Operator to Play a Polyphonic Chord by Depressing or Playing Only One Key or Other Activating Switch
Source: USPTO federal trademark records. Informational only, not legal advice. Status and details may lag the live USPTO database.