Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4700382 | Voice-switched telephone circuit with center idle state | Donald R. Means, Robert Clair True | 1987-10-13 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4700382 | Voice-switched telephone circuit with center idle state | Donald R. Means, Robert Clair True | 1987-10-13 |