Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4536620 | Master unlock circuit for an electronic telephone | Louis W. Smith | 1985-08-20 |
| 4453042 | Telephone station signaling lock circuit | Ann L. Wolf | 1984-06-05 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4536620 | Master unlock circuit for an electronic telephone | Louis W. Smith | 1985-08-20 |
| 4453042 | Telephone station signaling lock circuit | Ann L. Wolf | 1984-06-05 |