Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4854438 | Clutch disc for a friction disc clutch | Peter Huditz | 1989-08-08 |
| 4809835 | Releaser snap connection for a pulled-type diaphragm spring clutch | Erwin Ziegler, Peter Huditz, Werner Fricke | 1989-03-07 |
| 4810231 | Torsional vibration damper having springs with progressive characteristics | Alfred Schraut | 1989-03-07 |