Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5795199 | Propeller drive for watercraft | Hans Langenberg | 1998-08-18 |
| 4606727 | Anchoring arrangement for a tanker, including a fluid transfer system | Dieter Koenig, Manfred Niemann, Wilhelm Jenny, Jurgen Engelskirchen | 1986-08-19 |