Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6348087 | Three phase cyclonic separator | — | 2002-02-19 |
| 5244367 | Gear pump with a resilient means for biasing a side wear plate | — | 1993-09-14 |
| 5234017 | Restrictor valve for a metered liquid dispensing system | Edward C. Lewis, William C. Marrison, David Zander | 1993-08-10 |
| 5228594 | Metered liquid dispensing system | — | 1993-07-20 |
| 5028318 | Cyclonic system for separating debris particles from fluids | — | 1991-07-02 |
| 4795561 | Self regulating cyclonic separator | — | 1989-01-03 |