Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5259977 | Method and apparatus for the treatment of sewage sludge and the like | Mark Girovich | 1993-11-09 |
| 4872998 | Apparatus and process for forming uniform, pelletizable sludge product | Raymond J. Avendt | 1989-10-10 |