Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5324592 | Friction material containing brass powders | Fred Blankenhagen | 1994-06-28 |
| 4883638 | Method and device for producing a friction or rubbing element | Fred Blankenhagen | 1989-11-28 |
| 4770283 | Friction ring for clutches or brakes, and a method and device for producing the friction ring | Ulrich Wollenteit | 1988-09-13 |
| 4234337 | Method of producing sintered friction laminae | — | 1980-11-18 |