Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6099722 | Aerobic wastewater treatment system for small flows | Grady Tucker | 2000-08-08 |
| 5895566 | Aerobic wastewater treatment system for small flows | Grady Tucker | 1999-04-20 |
| 5720875 | Waste treatment system having means for controlling filtered backwash | William A. Stegall, Sr. | 1998-02-24 |
| 5441631 | Waste treatment system | William A. Stegall, Sr. | 1995-08-15 |
| 5269911 | Waste treatment system | William A. Stegall, Sr. | 1993-12-14 |
| 4834879 | Two-stage waste water treatment system for single family residences and the like | William A. Stegall, Sr. | 1989-05-30 |
| 4664795 | Two-stage waste water treatment system for single family residences and the like | William A. Stegall, Sr. | 1987-05-12 |