Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6878280 | Wastewater clarification methods and apparatus | Curtis S. McDowell, Robert Maurer | 2005-04-12 |
| 6869534 | Sludge digestion methods and apparatus | Curtis S. McDowell, Robert Maurer | 2005-03-22 |