Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841926 | Multi-cylinder internal combustion engine with externally applied ignition and with turbocharger | Klaus Hain, Staas Gietzen | 1989-06-27 |
| 4798181 | Valve guidance for an exhaust gas valve of an internal combustion engine | August Hofbauer, Erwin Knoll | 1989-01-17 |