Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8696906 | Involute cartridge filter system | Harold H. Harms | 2014-04-15 |
| 7138054 | Cartridge filter system | Harold H. Harms | 2006-11-21 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8696906 | Involute cartridge filter system | Harold H. Harms | 2014-04-15 |
| 7138054 | Cartridge filter system | Harold H. Harms | 2006-11-21 |