Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4268398 | Sludge agitating method | Frederick D. Lind, John W. Cole | 1981-05-19 |
| 4191479 | Sludge agitating apparatus | Frederick D. Lind, John W. Cole | 1980-03-04 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4268398 | Sludge agitating method | Frederick D. Lind, John W. Cole | 1981-05-19 |
| 4191479 | Sludge agitating apparatus | Frederick D. Lind, John W. Cole | 1980-03-04 |