Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10149083 | Center point stereo system | Richard Aspen Pittman | 2018-12-04 |
| 9961424 | Audio cabinet and control panel | Richard Aspen Pittman | 2018-05-01 |
| 7392880 | Dual range horn with acoustic crossover | — | 2008-07-01 |
| 4937874 | Emulated guitar loudspeaker | R. Aspen Pittman | 1990-06-26 |
| 4619342 | Multiple sound transducer system utilizing an acoustic filter to reduce distortion | — | 1986-10-28 |
| D278432 | Grille assembly for a coaxial loudspeaker | — | 1985-04-16 |
| 4283606 | Coaxial loudspeaker system | — | 1981-08-11 |