Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5095711 | Method and apparatus for enhancement of heat pump defrost | Derrick A. Marris | 1992-03-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5095711 | Method and apparatus for enhancement of heat pump defrost | Derrick A. Marris | 1992-03-17 |