Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850808 | Liquid ring pump having port member with internal passageways for handling carry-over gas | Ole B. Olsen | 1989-07-25 |
| 4795315 | Two-stage liquid ring pump | — | 1989-01-03 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850808 | Liquid ring pump having port member with internal passageways for handling carry-over gas | Ole B. Olsen | 1989-07-25 |
| 4795315 | Two-stage liquid ring pump | — | 1989-01-03 |