Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10960326 | Underdrain for a filter system for filtering water or wastewater and a method of washing a filter system | R. Lee Roberts | 2021-03-30 |
| 10463995 | Apparatus and method for removing impurities from water or wastewater | R. Lee Roberts | 2019-11-05 |
| 9987569 | Underdrain for a filter system for filtering water or wastewater and a method of washing a filter system | R. Lee Roberts | 2018-06-05 |