Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6070693 | Hearing protector against loud noise | — | 2000-06-06 |
| 6068079 | Acoustic valve capable of selective and non-linear filtering of sound | Armand Dancer, Georges Evrard | 2000-05-30 |
| 5936208 | Hearing protector against loud noises | — | 1999-08-10 |