Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5749780 | Roof vent | Jan Borst | 1998-05-12 |
| 4580373 | Building element and roof structure comprising a plurality of such elements | Kaj Bastiansen, Christian Bjorn, Keld H. Nielsen, Jorn Sorensen, Lars Thousig | 1986-04-08 |
| 4517783 | Roof or wall structure | — | 1985-05-21 |