Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856286 | Refrigeration compressor driven by a DC motor | Louis Sulfstede, Thomas Jensen | 1989-08-15 |
| 4850198 | Time based cooling below set point temperature | John D. Neal | 1989-07-25 |