Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5435486 | Ballast-free permanent rail way having recessed tie with central fastening element | Ralf Walter, Bernhard Schad, Gunther Leykauf, Josef Eisenmann | 1995-07-25 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5435486 | Ballast-free permanent rail way having recessed tie with central fastening element | Ralf Walter, Bernhard Schad, Gunther Leykauf, Josef Eisenmann | 1995-07-25 |