Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10533769 | Heating device | Norbert Volkmann, Ulas Sahin, Alexander Guhl | 2020-01-14 |
| 6581951 | Motion-dampening fifth-wheel hitch | — | 2003-06-24 |
| 4770430 | Self-steering axle assembly for vehicles | — | 1988-09-13 |
| 4373738 | Steerable auxiliary wheel assembly for vehicles | — | 1983-02-15 |