Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5667683 | Backwashable liquid filter system using rotating spray | — | 1997-09-16 |
| 5510029 | Filter cover assembly with dual concentric liquid passages | — | 1996-04-23 |
| 5301880 | Filter cleaning nozzle apparatus | — | 1994-04-12 |
| 5203998 | Permanent backwashable filter structure | — | 1993-04-20 |