Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6200106 | Fan assembly with a fan locking device for an automotive fluid friction fan clutch | Hans Martin, Rudolf Wichtl, Wolfgang Kuttler | 2001-03-13 |
| 5937983 | Fluid friction clutch | Hans Martin | 1999-08-17 |