Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6439445 | Tensioner | Anne Klaas De Groot | 2002-08-27 |
| 6024184 | Transport vehicle for large, heavy loads | Joop Roodenburg | 2000-02-15 |
| 5823712 | Method and installation for laying a pipeline on a surface located under water | Joop Roodenburg, Anne Klaas De Groot | 1998-10-20 |