Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6315844 | Method for producing high-strength track element and track element thus obtained | Walter Kunitz | 2001-11-13 |
| 6177205 | Process for producing a permanent way component and such a component | Alfred Kais, Walter Kunitz | 2001-01-23 |
| 5482576 | Railway-track elements and method of manufacturing them | Wilhelm Heller | 1996-01-09 |
| 4714500 | Method for thermal treatment of pearlitic rail steels | Wilhelm Heller, Jurgen Flugge | 1987-12-22 |
| 4510746 | Flexible band | — | 1985-04-16 |