Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6716361 | Renewable filter | Patrick M. Dugan | 2004-04-06 |
| 6568539 | Renewable filter with a bypass valve | Patrick M. Dugan | 2003-05-27 |
| 6228274 | Renewable filter | Patrick M. Dugan | 2001-05-08 |
| 6221242 | Renewable filter with a bypass valve | Patrick M. Dugan | 2001-04-24 |
| 5118417 | High-strength disposable tube filter | — | 1992-06-02 |
| 5116499 | High-strength spin-on tube filter | — | 1992-05-26 |
| 5024761 | High-strength quick-disconnect tube filter | — | 1991-06-18 |