Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6409944 | Method for producing a filter bottom for water treatment | Didier Perrin | 2002-06-25 |
| 5087361 | Filter floor nozzle housing and support arrangement | Marie-Pierre Gaudin, Marc Gilet | 1992-02-11 |