Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4961764 | Filtering unit and filtering equipment incorporating said unit | Robert Chaperon | 1990-10-09 |
| 4514198 | Apparatus for pressurization and filtration of contaminated air | Gerard Martin | 1985-04-30 |
| 4483273 | Shelter pressurization and filter installation | Alain Regnier | 1984-11-20 |