Issued Patents All Time
| 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, Jean-Pierre Schreiber, Jean-Bernard Wittner | 1991-02-12 |
| 4989824 | Motor block fastening device for a trenching machine | Jean-Claude Detilleux, Philippe Chagnot, Karl Bollinger, Jean-Pierre Schreiber, Philippe Lefort | 1991-02-05 |