Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5263798 | Process for guiding the excavation tool used for the construction of a wall cast in the ground, and excavation tool for implementing this process | Jacques Charlier, Jean-Claude Gessay | 1993-11-23 |
| 5002435 | Device for making cast-in-situ piles using a continuous hollow auger | — | 1991-03-26 |
| 4930940 | System for guiding the excavation tool used for constructing a wall cast in the ground | Jacques Charlier, Jean-Claude Gessay | 1990-06-05 |
| 4386876 | Production of anchored tie-rods | — | 1983-06-07 |