Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4953398 | Method and apparatus for detecting acoustic vibrations in a borehole | Jean Pierre Masson, Jacky Bourseul | 1990-09-04 |
| 4442711 | Device for measuring the flow of fluid in a well | Jean-Pierre Hulin, Roger Coudol | 1984-04-17 |
| 4278942 | Seal and pressure balance system for an electrode-type logging sonde | Jean-Loup Bonnet | 1981-07-14 |