Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12017193 | Propeller and stirrer for circulating wastewater in a clarifier | Thomas Hagspiel | 2024-06-25 |
| 11786873 | Submersible agitator device for circulating drinking water | — | 2023-10-17 |
| 11731090 | Hyperboloid agitator for circulating liquids, and agitating and gassing device | Thomas Hagspiel, Torsten Frey, Walter Steidl | 2023-08-22 |
| 11484848 | Apparatus for aerating bodies of water | Thomas Hagspiel, Torsten Frey, Walter Steidl | 2022-11-01 |
| D665047 | Stirring body | — | 2012-08-07 |
| 7163198 | Stirring and aerating device for activated sludges | — | 2007-01-16 |