Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9620833 | Electric energy store | Wolfgang Drenckhahn | 2017-04-11 |
| 9583804 | Electrical energy store | Wolfgang Drenckhahn, Horst Greiner, Norbert Kellner, Roland Reichenbacher | 2017-02-28 |