Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5975040 | Piston unit for an internal combustion engine | Aulis Silvonen, Pasi Halla-aho | 1999-11-02 |
| 5724933 | Piston unit for an internal combustion engine | Aulis Silvonen, Pasi Halla-aho | 1998-03-10 |