Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4608181 | Water filtration apparatus having upflow buoyant media filter and downflow nonbuoyant media filter | Andrew K. Hsiung, George F. Eaton | 1986-08-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4608181 | Water filtration apparatus having upflow buoyant media filter and downflow nonbuoyant media filter | Andrew K. Hsiung, George F. Eaton | 1986-08-26 |