Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4406922 | Stereo broadcast system | Norman W. Parker | 1983-09-27 |
| 4377728 | Phase locked loop with improved lock-in | — | 1983-03-22 |
| 4371747 | AM Stereophonic decoder | — | 1983-02-01 |
| 4338491 | Compatible AM stereophonic system | Norman W. Parker | 1982-07-06 |
| 4218586 | Compatible AM stereo broadcast system | Norman W. Parker | 1980-08-19 |
| 4192968 | Receiver for compatible AM stereo signals | Norman W. Parker | 1980-03-11 |