Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5324592 | Friction material containing brass powders | Hermann Putz | 1994-06-28 |
| 4883638 | Method and device for producing a friction or rubbing element | Hermann Putz | 1989-11-28 |