Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6904725 | Roof window with main frame and sash covering members | Birgitte Hansen, Kaj Nissen | 2005-06-14 |
| 6647676 | Openable window with main frame and sash covering members | Birgitte Hansen, Kaj Nissen | 2003-11-18 |