Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5647207 | Internal-combustion engine including a cylinder shut-off and exhaust gas catalysts | Ulrich Grotjahn, Stephan Knips, Guenter Koch, Bernd Plodek, Rainer Zimmer | 1997-07-15 |