Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4751953 | Lateral pull roll-up blind | Hans Appel | 1988-06-21 |
| 4535830 | Lateral-traction roller shade | Hans Appel | 1985-08-20 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4751953 | Lateral pull roll-up blind | Hans Appel | 1988-06-21 |
| 4535830 | Lateral-traction roller shade | Hans Appel | 1985-08-20 |