Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5305838 | Device comprising two articulated elements in a plane, applied to a drilling equipment | — | 1994-04-26 |
| 4860825 | Device for positioning a tool or instrument in a duct | Jacques Corteville, Frederic Hoffmann | 1989-08-29 |
| 4803874 | Device and method for determining the orientation of fractures in a geological formation | Jacques Marrast, Christian Wittrisch | 1989-02-14 |
| 4723890 | Articulated jet pump, usable more particularly in TFL technique for activating hydrocarbon or water producing wells | Jacques Corteville, Frederic Hoffmann | 1988-02-09 |
| 4205731 | Device for generating seismic waves by striking a mass against a target member | Jacques Cholet | 1980-06-03 |