Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6052293 | Converter device for connection between a single-phase side on a single or multi-phase side | Tommy Lejonberg | 2000-04-18 |
| 4403327 | Arc furnace charge-preheating power supply system | Staffan Granstrom | 1983-09-06 |