Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6910744 | Control device for compressed-air brakes | Martin Heller, Stefan Sonntag | 2005-06-28 |
| 6846048 | Pneumatic operating unit for compressed-air brakes | Martin Heller, Stefan Sonntag | 2005-01-25 |