Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6347615 | Damper for tap-changer vacuum switch | Silke Wrede | 2002-02-19 |
| 6091032 | Tap changer | Dieter Dohnal, Silke Wrede | 2000-07-18 |
| 6060669 | Tap selector | Dieter Dohnal, Silke Wrede | 2000-05-09 |