Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4979931 | Differential gear and control system for motor vehicles having a single driven axle and at least one undriven axle | Otwin Fleischmann, Hans D. Sommer, Johann Koch | 1990-12-25 |
| 4872489 | Process of providing in a liquid-containing liquid friction coupling an air-filled space having a predetermined volume | — | 1989-10-10 |