Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4984265 | Device for forming the hands-free function in a telephone set, associating the gain switching and echo suppression functions | Jean-Louis Connan, Serge Pinaud | 1991-01-08 |
| 4679115 | Electrical disturbance protective device between a terminal and a telephone line | Jean-Louis Connan | 1987-07-07 |