Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6129005 | Piston for a piston-cylinder unit | Gerald Fenn, Herold Schneider | 2000-10-10 |
| 6003227 | Process for manufacturing a piston ring | Norbert Deppert, Gerald Fenn | 1999-12-21 |