Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6173546 | Interlocking metal shingle | — | 2001-01-16 |
| 5572882 | Low pressure air cycle cooling device | — | 1996-11-12 |
| 4492091 | Apparatus and method for controlling a heat pump water heater | Robert J. Whitwell | 1985-01-08 |
| 4256475 | Heat transfer and storage system | — | 1981-03-17 |