Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6090284 | Underdrain unit for granular filtration system | Gary D. Haggard | 2000-07-18 |
| 4720360 | Diffused aeration system | — | 1988-01-19 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6090284 | Underdrain unit for granular filtration system | Gary D. Haggard | 2000-07-18 |
| 4720360 | Diffused aeration system | — | 1988-01-19 |