Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4551070 | Noise control for conically ported liquid ring pumps | Ole B. Olsen, Charles W. Bilik, Herbert H. Johnson | 1985-11-05 |
| 4521161 | Noise control for conically ported liquid ring pumps | Ole B. Olsen, Charles W. Bilik, Herbert H. Johnson | 1985-06-04 |
| 4498844 | Liquid ring pump with conical or cylindrical port member | Douglas Eric Bissell | 1985-02-12 |
| 4392783 | Liquid ring pump employing discharged pumping liquid for discharge port control | — | 1983-07-12 |