Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11155285 | Optical system for a LED signal and wayside LED signal | Axel Beier | 2021-10-26 |
| 9171488 | Optical display element and display device | Axel Beier, Martin Franke, Stefan Nerreter | 2015-10-27 |