Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6283148 | Standing valve with a curved fin | Allen A. Pennington | 2001-09-04 |
| 5382142 | Wall pump having backwash valve actuator | — | 1995-01-17 |
| 5086802 | Safety check valve | — | 1992-02-11 |
| 4848454 | Downhole tool for use with a ball and seat traveling valve for a fluid pump | — | 1989-07-18 |
| 4599054 | Travelling valve assembly for a fluid pump | — | 1986-07-08 |
| 4531896 | Fluid pump | — | 1985-07-30 |
| 4504199 | Fluid pump | — | 1985-03-12 |
| 4332533 | Fluid pump | — | 1982-06-01 |