Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7954791 | Fine bubble airlift device | Roy Trence Johnson | 2011-06-07 |
| 7934706 | Aeration device for use as a diffuser | — | 2011-05-03 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7954791 | Fine bubble airlift device | Roy Trence Johnson | 2011-06-07 |
| 7934706 | Aeration device for use as a diffuser | — | 2011-05-03 |