Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6036028 | Apparatus for separating off light materials from sand and gravel | Walter Strangalies, Thomas W. Neumann | 2000-03-14 |
| 4840753 | Device for aerating fluids, in particular during flotation | Ulrich Reilard | 1989-06-20 |