Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4589510 | Multiple wheel steering mechanism | Dierk Duerwald | 1986-05-20 |
| 4337704 | Turbulent-water way | Klaus Becker, Karl-Ernst Kaufmann | 1982-07-06 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4589510 | Multiple wheel steering mechanism | Dierk Duerwald | 1986-05-20 |
| 4337704 | Turbulent-water way | Klaus Becker, Karl-Ernst Kaufmann | 1982-07-06 |