Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4426730 | Method of detecting the presence of speech in a telephone signal and speech detector implementing said method | Francis Menet | 1984-01-17 |
| 4225754 | Loudspeaker telephone | Solange Bernard, Francois Michelon, Jacques Sourgens | 1980-09-30 |