Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4470271 | Outdoor unit construction for an electric heat pump | Robert Draper | 1984-09-11 |
| 4449376 | Indoor unit for electric heat pump | Robert Draper, Thomas J. Fagan, Stephen E. Veyo, Joseph R. Humphrey | 1984-05-22 |
| 4262493 | Heat pump | Robert R. Young | 1981-04-21 |