Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7794229 | Language learning system and a digital storage unit | Timo Saarni | 2010-09-14 |
| 6274817 | Arrangement in conductor track | Risto Jaakkola, Maria Wiren-Gottberg, Stig Winsten, Esko Vaisanen | 2001-08-14 |
| 6203339 | Adapter for dual circuit track lighting system | — | 2001-03-20 |
| 6113401 | Arrangement in connection with a current take-off device of a contact rail system | Esko Vaisanen, Risto Jaakkola | 2000-09-05 |
| 6033239 | Connector for track lighting systems | Risto Jaakkola, Esko Vaisanen | 2000-03-07 |
| 5921790 | Arrangement in connection with a current take-off device of a contact rail system | Esko Vaisanen, Risto Jaakkola | 1999-07-13 |
| 5869786 | Arrangement in connection with a conductor track | Risto Jaakkola, Esko Vaisanen | 1999-02-09 |