Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873838 | Refrigerant metering in a variable flow system | John M. Palmer | 1989-10-17 |
| 4796436 | Heat pump charging | John M. Palmer, Derrick A. Marris, James D'Agostino | 1989-01-10 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873838 | Refrigerant metering in a variable flow system | John M. Palmer | 1989-10-17 |
| 4796436 | Heat pump charging | John M. Palmer, Derrick A. Marris, James D'Agostino | 1989-01-10 |