Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5340485 | Apparatus and method for clarifier sludge collection | Bruce D. Bradley | 1994-08-23 |
| 5219470 | Apparatus and method for clarifier sludge collection | Bruce D. Bradley | 1993-06-15 |
| 5078873 | Filter cleaning apparatus | Brent C. Black, John B. Ainsworth, John Thorum | 1992-01-07 |