Issued Patents 2002
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6497533 | Drainage system with membrane cover and method for covering wastewater reservoir | — | 2002-12-24 |
| 6389757 | Clarifier cover | — | 2002-05-21 |
| 6357964 | Drainage system with membrane cover and method for covering wastewater reservoir | — | 2002-03-19 |
| 6338169 | Floating cover for large liquid reservoir | — | 2002-01-15 |