Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10315733 | Monohull drillship | Govert Hendrik Teunis Zijderveld, Sjoerd Maarten Hendriks | 2019-06-11 |
| 8960116 | Dual draft crane vessel | Willem Jacob van der Velde, Johan Albert Commandeur | 2015-02-24 |