Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4817757 | Wall covering for absorbing sound waves in a liquid medium | Etienne Rouget de Gourcez | 1989-04-04 |
| 4560028 | Sound absorbing wall lining | — | 1985-12-24 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4817757 | Wall covering for absorbing sound waves in a liquid medium | Etienne Rouget de Gourcez | 1989-04-04 |
| 4560028 | Sound absorbing wall lining | — | 1985-12-24 |