Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7631682 | Retractable window covering having a length expanding stiffening rod | Jan Pieter Wetsema, Hans de Lange | 2009-12-15 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7631682 | Retractable window covering having a length expanding stiffening rod | Jan Pieter Wetsema, Hans de Lange | 2009-12-15 |