Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4791663 | Telephone status recognition and bypass system | Lowell E. Johnson | 1988-12-13 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4791663 | Telephone status recognition and bypass system | Lowell E. Johnson | 1988-12-13 |