Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5658458 | Apparatus for removing suspended inert solids from a waste stream | Gene E. Keyser | 1997-08-19 |
| 5626755 | Method and apparatus for waste digestion using multiple biological processes | Gene E. Keyser | 1997-05-06 |