Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828702 | Process for separating a solid substance from a liquid mixture of substances | Hubert Coenen, Rainer Hagen | 1989-05-09 |
| 4812233 | Apparatus for separating a solid substance from a liquid mixture of substances | Hubert Coenen, Rainer Hagen | 1989-03-14 |