Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6354808 | Modular liquid ring vacuum pumps and compressors | Carl G. Dudeck | 2002-03-12 |
| 5899668 | Two-stage liquid ring pumps having separate gas and liquid inlets to the second stage | Carl G. Dudeck | 1999-05-04 |
| 5356268 | Check valve structures for liquid ring pumps | Louis J. Lengyel | 1994-10-18 |