Issued Patents 2017
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9640340 | Selector switch for tap-changing transformers and support arm for a tap selector thereof | Hurbert Zwirglmaier, Silke Wrede, Thomas Schuster, Ulli Laubereau | 2017-05-02 |