Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7597598 | Propeller for a marine propulsion system | Hans-Gunther Rosenkranz, Mark Armstrong | 2009-10-06 |
| 7156707 | Marine propulsion system | Hans-Gunther Rosenkranz, Mark Armstrong | 2007-01-02 |