Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4908132 | Shock resistant receiver dehydrator | Richard Edmund Koval, Walter O. Krause | 1990-03-13 |
| 4586875 | Refrigerant compressor bypass oil filter system | — | 1986-05-06 |
| 4193746 | Reversible gerotor pump | — | 1980-03-18 |