Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4575584 | Fail-safe digital phone | Dennis K. Smith | 1986-03-11 |
| 4374308 | I-Use indication in a telephone keyset | — | 1983-02-15 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4575584 | Fail-safe digital phone | Dennis K. Smith | 1986-03-11 |
| 4374308 | I-Use indication in a telephone keyset | — | 1983-02-15 |