Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4830140 | Perforated sound absorbing panel | Lars G. Fridh | 1989-05-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4830140 | Perforated sound absorbing panel | Lars G. Fridh | 1989-05-16 |