Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8068970 | Method of operation for an internal combustion engine | Ludger Hugenroth, Heinrich Isfort | 2011-11-29 |
| 6974487 | Cooling air cleaning device for a harvesting machine | — | 2005-12-13 |