Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4804419 | Continuously operable sugar centrifuge | Helmut Schaper | 1989-02-14 |
| 4802925 | Continuously operable centrifuge for mashing and centrifuging of sugar massecuite | Helmut Schaper | 1989-02-07 |