Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850244 | Flywheel | Volker Grassmuck, Benno Jorg, Klaus Kurr, Eberhard Sommer | 1989-07-25 |
| 4825718 | Torsional vibration damper | Heinz B. Seifert | 1989-05-02 |
| 4813909 | Elastic axial-rotation coupler | Benno Jorg | 1989-03-21 |