Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4653407 | Two-rail trolley | Heinz Hasselmann | 1987-03-31 |
| 4221171 | Direction shift control for connected vehicle undercarriages | Heinz Flaig, Martin Middeldorf | 1980-09-09 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4653407 | Two-rail trolley | Heinz Hasselmann | 1987-03-31 |
| 4221171 | Direction shift control for connected vehicle undercarriages | Heinz Flaig, Martin Middeldorf | 1980-09-09 |