Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5375980 | Housing configuration for helical bladed fluid ring pump | Willy Johst | 1994-12-27 |
| 4523893 | Liquid ring pump | Willy Johst | 1985-06-18 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5375980 | Housing configuration for helical bladed fluid ring pump | Willy Johst | 1994-12-27 |
| 4523893 | Liquid ring pump | Willy Johst | 1985-06-18 |