Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4219240 | Wheel for roller skates or the like | Manfred Brandenstein, Armin Olschewski, Willi Gossmann, Josef Stark | 1980-08-26 |
| 4194752 | Skateboard | Gerhard Tilch, Wolfgang Friedrich, Herbert Dobhan, Hermann Hetterich, Peter Horling | 1980-03-25 |