Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7099474 | Key and lock device | Inge Lidén, Rolf Norberg, Björn Magnusson, Johan Warnström, Hannu Sivonen +13 more | 2006-08-29 |
| 5205143 | Cylinder lock | Seija Ramo, Kaarlo Martikainen, Kyosti Nevalainen | 1993-04-27 |
| 4902053 | Door lock | Keijo Lehikoinen, Paavo Piiroinen | 1990-02-20 |