Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861492 | Method of dewatering sewage sludge particularly on recessed plate pressing equipment | Josef Lehmkuhl, Kurt Presslein | 1989-08-29 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861492 | Method of dewatering sewage sludge particularly on recessed plate pressing equipment | Josef Lehmkuhl, Kurt Presslein | 1989-08-29 |