Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4309155 | Vehicle fuel tank having vented internal fuel pump | Otto Heinz, Helmut Hoppmann | 1982-01-05 |
| 4305416 | Fuel tank for automobiles | Heinz Beckmann, Rolf Reinke | 1981-12-15 |
| 4212600 | Vehicle fuel tank having vented internal fuel pump | Heinz Otto, Helmut Hoppmann | 1980-07-15 |