Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869290 | Expansion device for a refrigeration system, piston therefor and methods of making the same | John M. Halmose | 1989-09-26 |
| 4819442 | Refrigerator system, control device therefor and methods of making and operating the same | Charles J. Everett | 1989-04-11 |