Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4839872 | Geophone with a sensitive element made of piezoelectric polymer | Claude Gragnolati, Didier Thollon | 1989-06-13 |
| 4762208 | Vibration damper for a towed body | Rene Reynier, Gilles Moresco, Francois Ramoger | 1988-08-09 |