Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4987573 | Telephone system digital channel bank interface | Sylvain Desabrais | 1991-01-22 |
| 4901344 | Telephone system digital channel bank interface | Sylvain Desabrais | 1990-02-13 |