Issued Patents All Time
Showing 1–4 of 4 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, Gilles Mariaux, Gerard Mineaud, Alain Guinot | 1999-11-16 |
| 4419045 | Method and device for reducing the noise of turbo-machines | Jean-Claude Thevenin, Jean-Pierre Y. B. Girault, Gerhard Richter | 1983-12-06 |
| 4255083 | Method and device for reducing the noise of turbo-machines | Jean-Claude Thevenin, Jean-Pierre Y. B. Girault, Gerhard Richter | 1981-03-10 |
| 4199295 | Method and device for reducing the noise of turbo-machines | Pierre M. Raffy, Jean-Pierre Y. B. Girault, Gerhard Richter, Jean-Claude Thevenin | 1980-04-22 |