Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7549957 | Screw-type solid bowl centrifuge | Steffen Hruschka | 2009-06-23 |
| 6908423 | Screw for a solid-bowl centrifuge and a method of extracting oil using the centrifuge | Steffen Hruschka | 2005-06-21 |