Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4265149 | Method and apparatus for truing railroad wheels | Helmut Wittkopp | 1981-05-05 |
| 4200012 | Method and apparatus for truing railroad wheels | Helmut Wittkopp | 1980-04-29 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4265149 | Method and apparatus for truing railroad wheels | Helmut Wittkopp | 1981-05-05 |
| 4200012 | Method and apparatus for truing railroad wheels | Helmut Wittkopp | 1980-04-29 |