Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7481604 | Machine for digging a trench and making a wall in said trench | Daniel Perpezat, Jean-Pierre Hamelin | 2009-01-27 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7481604 | Machine for digging a trench and making a wall in said trench | Daniel Perpezat, Jean-Pierre Hamelin | 2009-01-27 |