Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5170499 | Method and apparatus for adjusting the volume level of a radio | — | 1992-12-08 |
| 5093658 | Communication device capable of ambient sound level controlled transmissions | — | 1992-03-03 |
| 4904992 | Radio with message reception and ambient noise level controlled indicator | — | 1990-02-27 |