Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5170601 | Thin slab of plastic material adapted to cover the terraces of buildings | Pierre Geisen | 1992-12-15 |
| 4680913 | Process for producing airtight sealing of buildings | Pierre Geisen, Jean-Claude Reillaudoux | 1987-07-21 |