Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6739853 | Compact control mechanism for axial motion control valves in helical screw compressors | Bruce A. Fraser | 2004-05-25 |
| 6694750 | Refrigeration system employing multiple economizer circuits | Alexander Lifson | 2004-02-24 |