Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4991322 | Device for affixing cutter drums to an apparatus intended for cutting trenches in the ground | Jean-Claude Detilleux, Gilbert Ferre, Philippe Lefort, Andre Ponsada, Jean-Bernard Wittner | 1991-02-12 |
| 4989824 | Motor block fastening device for a trenching machine | Jean-Claude Detilleux, Philippe Chagnot, Karl Bollinger, Andre Ponsada, Philippe Lefort | 1991-02-05 |
| 4800967 | Drilling machine for digging trenches in the ground | Philippe Chagnot | 1989-01-31 |
| 4465403 | Method of constructing poured-concrete wall panels and wall thus obtained | Christian Vial | 1984-08-14 |