Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8881840 | Fire protection device for rail vehicles | Roger Dirksmeier, Dirk Sprakel | 2014-11-11 |
| 8590631 | Firefighting in railway vehicles | Dirk Sprakel, Roger Dirksmeier | 2013-11-26 |