Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7637793 | Spark plug and method for producing it | Pertti Lintunen, Pekka Lintula, Tomi Lindroos, Kalevi Taskinen | 2009-12-29 |
| 5975040 | Piston unit for an internal combustion engine | Trygve Ahlroth, Pasi Halla-aho | 1999-11-02 |
| 5724933 | Piston unit for an internal combustion engine | Trygve Ahlroth, Pasi Halla-aho | 1998-03-10 |