Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7662277 | Wastewater treatment apparatus | — | 2010-02-16 |
| 6974536 | Wastewater treatment apparatus including dosing and recirculation chambers within a single tank | — | 2005-12-13 |
| 6616832 | Multi-layer recirculating filter wastewater treatment apparatus | — | 2003-09-09 |
| 6132599 | Multi-layer recirculating filter wastewater treatment apparatus | — | 2000-10-17 |