Issued Patents 1997
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5645216 | Bearing for a part of a railroad track | Albrecht Demmig, Hans-Ulrich Dietze, Alfred Kais, Erich Nuding | 1997-07-08 |
| 5605281 | Rail support system | Hubertus Hohne, Alfred Kais, Erich Nuding | 1997-02-25 |
| 5590833 | Expansion joint for part of a railway track | Hubertus H ohne, Alfred Kais, Erich Nuding | 1997-01-07 |