Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10913014 | Multiple rate filter underdrain lateral gas metering plate | John L. Geibel, Ivan Zhu | 2021-02-09 |
| 10881989 | Self-cleaning, groutless, filter underdrain | Scott R. Cable, John L. Geibel, Robert J. Green, Howard J. Sweeney, Robert Lee Wiley, Jr. | 2021-01-05 |