Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6716361 | Renewable filter | Richard J. Deibel | 2004-04-06 |
| 6568539 | Renewable filter with a bypass valve | Richard J. Deibel | 2003-05-27 |
| 6228274 | Renewable filter | Richard J. Deibel | 2001-05-08 |
| 6221242 | Renewable filter with a bypass valve | Richard J. Deibel | 2001-04-24 |