Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6669854 | Stepping screen assembly hydraulically driven | — | 2003-12-30 |
| 6177020 | Stepping screen assembly for collecting solids in waste water discharges | — | 2001-01-23 |
| 5993651 | Water influent particle removing apparatus | — | 1999-11-30 |
| 5102536 | Self-cleaning water filter screen apparatus | — | 1992-04-07 |
| 5034122 | Self cleaning static bar grid | — | 1991-07-23 |
| 4961540 | Three shaft comminution apparatus | — | 1990-10-09 |
| 4812231 | Self cleaning rotating fine polishing filter screen apparatus | — | 1989-03-14 |
| 4597864 | Waste materials filtering apparatus | — | 1986-07-01 |