Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4430733 | Switching of digital signals | John H. M. Hardy, Robert E. Barrett, Anthony R. Allwood, John Hovell, Donald W. Smith +2 more | 1984-02-07 |
| 4341928 | Ringing signal supply | Mark V. Stanson | 1982-07-27 |