Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5480274 | Aircraft tug without tow bar | Wilhelm Franken, Lars T. Michaelsen | 1996-01-02 |
| 5259572 | Towing vehicle without draw tongue for towing aircraft | Wilhelm Franken, Ernest Kretschmann, Heinrich Goris, Torsten L. Michaelsen, Dieter Pohe | 1993-11-09 |