Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4680809 | Light waveguide coupling device | Christoph Zeller | 1987-07-14 |
| 4641243 | Computer-controlled interlocking system for a railway installation | Adalbert Zillmer | 1987-02-03 |
| 4381094 | Apparatus for determining the signal term to be transmitted to a railroad traction vehicle | Horst-Guenter Gnest, Wolfgang Granzow, Adalbert Zillmer | 1983-04-26 |