Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5975800 | Method for directing groundwater flow and treating groundwater in situ | David A. Edwards | 1999-11-02 |
| 5833388 | Method for directing groundwater flow and treating groundwater in situ | David A. Edwards | 1998-11-10 |