Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5668418 | Three-phase filter equipment including standby filter branch for switchably replacing a removed filter branch for a particular phase | Lennart Carlsson | 1997-09-16 |
| 5666277 | Series-compensated converter station | Per-Erik Bjorklund, Tomas Jonsson, Urban strom | 1997-09-09 |