Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6434776 | Tube scraping device | Patrick Lecointe | 2002-08-20 |
| 6142165 | Method and apparatus for installing a branch connector from the top of an excavation | Christian Wartel, Patrick Le Cointe | 2000-11-07 |
| 6050351 | Drilling hole system for horizontal boreholes | Josef Eckenfels, Herbert Haas, Norbert Prinz, Christian Wartel | 2000-04-18 |
| 4744123 | Device for scraping the outer surface of a tube | Patrick Le Testu, Michel Cochetel, Jean-Michel Longeau | 1988-05-17 |