Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5490405 | Cylinder lock--key--combination | Kyosti Nevalainen, Pekka Vehvilainen | 1996-02-13 |
| 5205143 | Cylinder lock | Reijo Hakkarainen, Kaarlo Martikainen, Kyosti Nevalainen | 1993-04-27 |