Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4444241 | Blind or shutter for windows or the like | Alfred Frei | 1984-04-24 |
| 4444242 | Modular shutter for windows or the like | Daniel Voney, Josef Koch, Alfred Frei | 1984-04-24 |
| 4444243 | Shutter for windows or the like | Daniel Voney | 1984-04-24 |