Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4634049 | Concrete crosstie with recesses and method for the production thereof | Gerd Westerdorff | 1987-01-06 |
| 4339077 | Rail mounting system | Peter Dahlhaus, Wilhelm Striepeke | 1982-07-13 |