Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5697336 | Engine brake for a multi-cylinder internal combustion engine | Frank Pawellek, Manfred Unger | 1997-12-16 |
| 5676109 | Hydraulic system, in particular an engine brake for an internal combustion engine | Manfred Unger, Burkhard Willig | 1997-10-14 |