Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5645614 | Process for the utilization of sewage sludges | Hans-Ulrich Dummersdorf, Gunther Herbst, Manfred Erken, Helmut Kreusing | 1997-07-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5645614 | Process for the utilization of sewage sludges | Hans-Ulrich Dummersdorf, Gunther Herbst, Manfred Erken, Helmut Kreusing | 1997-07-08 |