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DALEN PRODUCTS, INC.
| DALEN PRODUCTS, INC. Patent applications | ||
| Patent application number | Title | Published |
|---|---|---|
| 20110303623 | WATER FILTER SYSTEM - A slow/intermittent sand filter that purifies polluted water by flowing through sand in a manner that achieves greater purity and permits simpler and more effective maintenance than existing filters. | 12-15-2011 |