Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4517695 | Method and apparatus for balancing of out-of-balance forces in centrifuges or combined washing machines-spin driers | Ernst Hoffmann, Hans F. Arendt, Leonhard Spiewok | 1985-05-21 |
| 4513464 | Method for controlling the acceleration of a centrifuging device | Leonhard Spiewok | 1985-04-30 |