Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6830688 | Integrated hydroponic and wetland wastewater treatment systems and associated methods | David C. H. Austin, J. Rob von Rohr | 2004-12-14 |
| 6811700 | Integrated hydroponic and fixed-film wastewater treatment systems and associated methods | David C. H. Austin, Eric Lohan | 2004-11-02 |