Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5332028 | Method and apparatus for controlling supplemental electric heat during heat pump defrost | — | 1994-07-26 |
| 5095711 | Method and apparatus for enhancement of heat pump defrost | Ross K. Burnside | 1992-03-17 |
| 4796436 | Heat pump charging | Roger J. Voorhis, John M. Palmer, James D'Agostino | 1989-01-10 |
| 4742864 | Passive ventilated control box | Richard J. Duell, John M. Palmer, Anthony P. Sardina, Jr. | 1988-05-10 |
| 4709560 | Control module cooling | Roger J. Voorhis, Daryl G. Erbs, John M. Palmer | 1987-12-01 |