Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6161593 | Ventilation duct and insulation panel used for its internal lining | Alain Melinand, Claes Staffan Tigerfeldt | 2000-12-19 |
| 5975146 | Ventilation duct and insulation panel used for its internal lining | Alain Melinand, Claes Staffan Tigerfeldt | 1999-11-02 |