Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5774418 | Method for on-line acoustic logging in a borehole | Jean Magendie | 1998-06-30 |
| 5592381 | Device for processing and interpreting drilling data, placed at the bottom of a well and method implementing this device | Henry Henneuse | 1997-01-07 |
| 5277061 | Method for determining the rotation speed of a drill bit | — | 1994-01-11 |