Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5979381 | Valve gear mechanism for an internal combustion engine | Erwin Korostenski, Armin Bertsch | 1999-11-09 |
| 5975037 | Internal combustion engine | Erwin Korostenski, Armin Bertsch | 1999-11-02 |
| 5884592 | Valve gear mechanism for an internal combustion engine | Erwin Korostenski, Armin Bertsch | 1999-03-23 |