Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5092609 | High-pressure sealing device between two elements in relative motion | Marc Lepretre, Claude Portier | 1992-03-03 |
| 4586873 | Mixer-ejector with jet effect and variable cross-section | Marc Lepretre, Michel R. Caillault | 1986-05-06 |
| 4473934 | Method for extracting packing rings from a stuffing-box using a liquid jet | Jean-Yves Marsac, Marc Lepretre | 1984-10-02 |
| 4233886 | Sealing device for hydraulic piston mechanism | Marc Lepretre | 1980-11-18 |