Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4922677 | Board particularly for use by suspended ceilings | Benni Madsen, Vagn N. Rasmussen | 1990-05-08 |
| 4830140 | Perforated sound absorbing panel | Stig Ingemansson | 1989-05-16 |