Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8683913 | Piston for an internal combustion engine | Willi Sikorsky, Ralf Buschbeck | 2014-04-01 |
| 7954421 | Lightweight piston | Ralf Buschbeck, Johannes Sperman, Klaus Lormes | 2011-06-07 |