Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5540101 | Borehole directional dilatometer | Raoul Leroux, Etienne Dorig, Bernard Amadei | 1996-07-30 |
| 4719803 | Borehole extensometer for monitoring relative mass displacements | Raoul Leroux, Gerard Theroue | 1988-01-19 |