Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6153099 | Biological waste treatment process and apparatus | Frank G. Weis | 2000-11-28 |
| 5118415 | Oxidation ditch velocity control system | Frank G. Weis | 1992-06-02 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6153099 | Biological waste treatment process and apparatus | Frank G. Weis | 2000-11-28 |
| 5118415 | Oxidation ditch velocity control system | Frank G. Weis | 1992-06-02 |