Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11099239 | Measuring device for use in an electric switching device | Sabine Firmenich, Josef Knopp, Ralph Kriechel | 2021-08-24 |
| 10971320 | Switching device and control method | Gregor Fleitmann, Hans-Juergen Mader, Daniel A. Jansen, Ralph Kriechel | 2021-04-06 |