Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5896285 | Apparatus for interconnection in voltage-stiff converter devices | Olle Ekwall | 1999-04-20 |
| 5815385 | Control of an installation for transmission of high-voltage direct current | Mats Hyttinen | 1998-09-29 |