Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6312611 | Apparatus for distributing gas and liquid during concurrent gas/liquid backwash in filter underdrain flumes | Richard Hsieh, John L. Geibel | 2001-11-06 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6312611 | Apparatus for distributing gas and liquid during concurrent gas/liquid backwash in filter underdrain flumes | Richard Hsieh, John L. Geibel | 2001-11-06 |