Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5690067 | Arrangement for the operation of valves of internal combustion engine | — | 1997-11-25 |
| 5601057 | Valve actuating system for a multicylinder internal combustion engine | Willy Treyz, Markus Dusmann, Gerhard Doll | 1997-02-11 |