Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4796436 | Heat pump charging | Roger J. Voorhis, John M. Palmer, Derrick A. Marris | 1989-01-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4796436 | Heat pump charging | Roger J. Voorhis, John M. Palmer, Derrick A. Marris | 1989-01-10 |