Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7005064 | Method and apparatus for remediating wastewater holding areas and the like | Robert Anthony Keller, William J. Cretens, Kent T. Depuydt, Russell D. Johnson, Dean R. Wickoren | 2006-02-28 |
| 6835314 | Method and apparatus for remediating wastewater holding areas and the like | Robert Anthony Keller, William J. Cretens, Kent T. Depuydt, Russell D. Johnson, Dean R. Wickoren | 2004-12-28 |