Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6033196 | Rotary pump | Paul J. Lutes, Joseph Ashurst | 2000-03-07 |
| 5921274 | Internal relief and bypass valve for pumps and piping systems | Paul J. Lutes | 1999-07-13 |
| 5431552 | Vane pump | James Jay Davis, James D. Gray, Michael Franklin Hughes, Michael W. Spidell, Alan P. Tiefenbrun | 1995-07-11 |
| 4388050 | Manifold unit and assembly and fluid end assembly | — | 1983-06-14 |