Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5238452 | Personalized air conditioning system | Hans F. Levy, Peter Betz | 1993-08-24 |
| 4860642 | Personalized air conditioning and method | — | 1989-08-29 |
| 4646966 | Personalized air conditioning | — | 1987-03-03 |
| 4546818 | Multiple source energy recovery system | — | 1985-10-15 |
| 4363218 | Heat pump using solar and outdoor air heat sources | — | 1982-12-14 |
| 4197716 | Refrigeration system with auxiliary heat exchanger for supplying heat during defrost cycle and for subcooling the refrigerant during a refrigeration cycle | — | 1980-04-15 |