Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5074697 | Releasable connector for interconnecting two parts subjected to high stresses | Gilles De Braeckelaer, Jean-Francois Bonniec | 1991-12-24 |
| 4563757 | Method and apparatus for acquiring seismic signals in a borehole | Jean-Luc Decorps | 1986-01-07 |
| 4358224 | Continuous sliding support gantry for a large passage | Pierre Grandfils | 1982-11-09 |
| 4248136 | Thrust device using hydraulic jacks | Pierre Grandfils | 1981-02-03 |
| 4231672 | Heavy duty adjustable prop with a ball-and-socket joint | Pierre Grandfils | 1980-11-04 |
| 4212362 | Device for causing translation of a tracked machine | Pierre Grandfils | 1980-07-15 |