Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4901810 | Safety device for selectivity track-guided or road travelling vehicles | Klaus Nieman, Herbert Mehren | 1990-02-20 |
| 4836475 | Safety system on track guidance lines | Klaus Niemann, Herbert Mehren | 1989-06-06 |
| 4613073 | Compound glass pane construction and method for heating the same | Helmut Wulf | 1986-09-23 |