Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7921555 | Piston for an internal combustion engine and method for its production | Helmut Kollotzek, Markus Leitl, Sven Schilling, Ernst Limbach, Josip Zvonkovic | 2011-04-12 |
| 7900551 | Piston for an internal combustion engine | Helmut Kollotzek, Markus Leitl, Sven Schilling, Ernst Limbach, Josip Zvonkovic | 2011-03-08 |