Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4527016 | Current regulated pulse dialer with memory retention circuit | — | 1985-07-02 |
| 4309574 | Electronic tone ringer | William Stobbs | 1982-01-05 |
| 4286120 | Current regulated pulse dialer circuit | — | 1981-08-25 |