Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6309181 | Fluid flow machine wheel and uses thereof | — | 2001-10-30 |
| D436647 | Propeller for agitating liquids | Helmut Sporl | 2001-01-23 |
| D432621 | Propeller for agitating liquids | Helmut Sporl | 2000-10-24 |
| D431627 | Propeller for agitating liquids | Helmut Sporl | 2000-10-03 |
| 5059313 | Conveyor rake sieve with hook-like plates | Hermann O. Wirth | 1991-10-22 |