Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6473914 | Flexible submersible panel for pool formed with elongated hollow elements and corresponding use | Béatrice Houlle | 2002-11-05 |
| RE31421 | Building elements and their preparation | Felix Wehrmann, Rene-Hagen Voelki | 1983-10-18 |
| 4191667 | Building elements and their preparation | Felix Wehrmann, Rene-Hagen Voelkl | 1980-03-04 |