Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845812 | Device for the automatic opening and mixing of fiber bales | Kurt Kriechbaum, Johann Walk, Hans Landwehrkamp | 1989-07-11 |
| 4813103 | Device for the removal of fiber material by suction | Johann Walk | 1989-03-21 |