Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4578544 | Initialization device for echo cancelling device and application thereof to remote echos | Jean-Marc M. Colin de Verdiere | 1986-03-25 |
| 4375013 | Device for digit rate reduction of PCM-signals | Denis F. Cointot, Guy A. de Passoz | 1983-02-22 |