Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4688142 | Current transmission system for HVDC including a solid insulator having a surface coating of resin containing chromium oxide or iron oxide | Arne Hjortsberg, Goran Holmstrom | 1987-08-18 |