Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4338524 | Drive unit for a compressor of a heat pump | Ernst Hatz | 1982-07-06 |
| 4293092 | Heating system with heat pump and auxiliary heater | Ernst Hatz, Erwin Peter, Rolf Blumhardt | 1981-10-06 |