Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4336692 | Dual source heat pump | Joseph A. Pietsch | 1982-06-29 |
| 4308723 | Heat pump employing optimal refrigerant compressor for low pressure ratio applications | — | 1982-01-05 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4336692 | Dual source heat pump | Joseph A. Pietsch | 1982-06-29 |
| 4308723 | Heat pump employing optimal refrigerant compressor for low pressure ratio applications | — | 1982-01-05 |