Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5234323 | Fluid positive displacement machine with gas injection in the discharge region | — | 1993-08-10 |
| 5040949 | Two stage dry primary pump | Jacques Long | 1991-08-20 |
| 4983106 | Rotary screw machine with multiple chambers in casing for lubrication-coding fluid | Dan Wright, Allan Riach, Rene Sibuet, Jacques Long | 1991-01-08 |
| 4887941 | Method and apparatus for starting series-coupled vacuum pumps | Jacques Long | 1989-12-19 |