Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7648565 | Filter element | Michael D. Clausen, Peter Popoff | 2010-01-19 |
| 5645718 | Reversible filter element | Walter H. Stone | 1997-07-08 |
| 5362389 | Fuel filter assembly with reversible element | Walter H. Stone | 1994-11-08 |