Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6230865 | Hub for friction clutch | Wilfried Pfeuffer, Klaus Hofmann | 2001-05-15 |
| 5857546 | Multiple-disk friction clutch | Klaus Hofmann, Rolf Munz, Wilfried Pfeuffer | 1999-01-12 |