Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8001946 | Piston for an internal combustion engine and method for its production | — | 2011-08-23 |
| 7921555 | Piston for an internal combustion engine and method for its production | Arnold Benz, Helmut Kollotzek, Sven Schilling, Ernst Limbach, Josip Zvonkovic | 2011-04-12 |
| 7900551 | Piston for an internal combustion engine | Arnold Benz, Helmut Kollotzek, Sven Schilling, Ernst Limbach, Josip Zvonkovic | 2011-03-08 |