Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7836647 | Filtering wall for expendable forms, means and process for making said filtering wall and forms equipped with same | — | 2010-11-23 |
| 5687522 | Formwork for building a concrete wall | Philippe Durand | 1997-11-18 |