Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4591728 | Transformerless power unit | Tilmann Kruger, Werner Arnold | 1986-05-27 |
| 4188528 | Electronic control device for electric ranges | Dieter Wierzchowski, Klaus Fischer, Gunther Formanek | 1980-02-12 |