Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4539912 | Car bridging arrangement for high speed railway vehicles | Helmut Hassel | 1985-09-10 |
| 4411201 | Railway car diaphragm construction | Helmut Hassel | 1983-10-25 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4539912 | Car bridging arrangement for high speed railway vehicles | Helmut Hassel | 1985-09-10 |
| 4411201 | Railway car diaphragm construction | Helmut Hassel | 1983-10-25 |