Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6810840 | Internal combustion engine and method for the operation thereof | — | 2004-11-02 |
| 6772719 | Hydraulic valve lifter with operating control system | Robert Schmidt, Holger Steffen, Thomas Stolk | 2004-08-10 |