Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4677663 | Telephone answering and call forwarding improvement | — | 1987-06-30 |
| 4540855 | Detecting signals within a passband on a telephone line | Chester P. Quinn | 1985-09-10 |
| 4477698 | Apparatus for detecting pick-up at a remote telephone set | Chester P. Quinn | 1984-10-16 |
| 4392129 | Multiplexed liquid crystal display | Joseph H. Mehaffey | 1983-07-05 |
| 4286118 | Data distribution system for private automatic branch exchange | Joseph H. Mehaffey | 1981-08-25 |