Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850451 | Device for generating in the ground both transverse and longitudinal acoustic waves in a plurality of different directions | Jacques Cholet | 1989-07-25 |
| 4609066 | Mixed device for generating longitudinal or shear waves | Jean Laurent, Andre James | 1986-09-02 |
| 4564083 | Device for generating acoustic shear waves in the earth | Jacques Cholet, Pierre Grolet, Roland Huin | 1986-01-14 |
| 4505362 | Device for avoiding multiple bounces against a target of a mass _falling thereon along a rectilinear trajectory | Jean-Claude Dubois, Andre James | 1985-03-19 |
| 4433736 | Device for avoiding secondary impacts resulting from the bounces of a mass against a target-member | Laurent Bozec | 1984-02-28 |
| 4296828 | Mobile device for generating acoustic shear waves | Andre James | 1981-10-27 |
| 4271923 | Mobil device for generating acoustic shear waves in the earth | Andre James | 1981-06-09 |