Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5653815 | Process for solid-liquid extraction and extraction tower for carrying out the process | Heinrich Hartmann, Dieter Hellmig, Siegfried Matusch, Guenter Pohner, Guenther Ross | 1997-08-05 |