Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4326500 | Solar radiation collector | Winfried Bernhardt, Rudolf Kroll | 1982-04-27 |
| 4296732 | Solar radiation collector | Winfried Bernhardt, Rudolf Kroll | 1981-10-27 |
| 4269040 | Heat pump drive | Winfried Bernhardt | 1981-05-26 |
| 4249375 | Heat exchanger | Udo Herbst, Horst Pommerenke | 1981-02-10 |
| 4190038 | Solar heater | Herbert Heitland, Rudolf Kroll | 1980-02-26 |