Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5690816 | Anti-drain back/pressure relieved filter cartridges | — | 1997-11-25 |
| 5660771 | Molding process for forming a sealing gasket on filter media | William F. Dunfee, Ronald R. Puckett | 1997-08-26 |