Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11311936 | Valve seat ring | Ekkehard Kohler, Dirk Emde, Robert Hammelmann, Christian Blecking, Anna Seyfarth | 2022-04-26 |
| 9988951 | Double/triple-layer valve guide | Christian Blecking, Ekkehard Kohler, Dirk Emde | 2018-06-05 |