Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6493999 | Roof window with an improved securing device | Claes Lindgren, Birgitte Hansen, Samuel Howard Darmer, Lars Erdmann | 2002-12-17 |
| 5535551 | Electrical window operator | Leon Geisshirt | 1996-07-16 |