Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4743980 | Audio carrier amplitude control for videodisc recorder | — | 1988-05-10 |
| 4707670 | PLL stabilized frequency modulator with extended low frequency range | — | 1987-11-17 |
| 4701603 | Focus control system for optical information recorder or player | John F. Browne | 1987-10-20 |