Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836148 | Shrouding for engine cooling fans | Robert C. Mellin | 1989-06-06 |
| 4797600 | Magnetic drive control system for a multiple cooling fan installation | Jack W. Savage | 1989-01-10 |