Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5984773 | Method and apparatus for regulating the internal pressure of a ventilated, closed space subjected to variations in external pressure | Yves Gervais, Gerard Mineaud, Alain Guinot, Pierre A. Andre | 1999-11-16 |
| 5647793 | Apparatus and method for preventing sudden changes of pressure in vehicles | Yves Gervais | 1997-07-15 |