Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4544489 | Process and apparatus for controlled addition of conditioning material to sewage sludge | Herbert Wallace Campbell | 1985-10-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4544489 | Process and apparatus for controlled addition of conditioning material to sewage sludge | Herbert Wallace Campbell | 1985-10-01 |