Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4476920 | Method and apparatus for integrating operation of a heat pump and a separate heating source | Alan S. Drucker, Richard D'Aversa | 1984-10-16 |
| 4242876 | Rooftop type air conditioner | Edward G. Cooper, David New | 1981-01-06 |