Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11390494 | Crane and method for positioning an object | Terence Willem August Vehmeijer, Joop Roodenburg | 2022-07-19 |
| 9352809 | Semi-submersible vessel and operating method | Joop Roodenburg, Alexei Bereznitski | 2016-05-31 |
| 8628287 | Fallpipe stone dumping vessel | Terence Willem August Vehmeijer, Joop Roodenburg | 2014-01-14 |