Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4500037 | Railway road bed | Hermann Ortwein, Josef Vorwald | 1985-02-19 |
| 4266719 | Track mounting assembly and sound-damping system therefore | Hermann Ortwein | 1981-05-12 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4500037 | Railway road bed | Hermann Ortwein, Josef Vorwald | 1985-02-19 |
| 4266719 | Track mounting assembly and sound-damping system therefore | Hermann Ortwein | 1981-05-12 |