Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4759571 | Fluid transfer module with multiple flow paths | Charles W. Stone | 1988-07-26 |
| 4674959 | Pressure-operated valve, particularly for a downhole pump | Albert D. Fox | 1987-06-23 |
| 4478558 | Downhole pump with check valve | — | 1984-10-23 |
| 4468175 | Fluid driven successive stage bladder pump | — | 1984-08-28 |
| 4439113 | Liquid pump with flexible bladder member | — | 1984-03-27 |
| 4360320 | Fluid driven successive stage bladder pump | — | 1982-11-23 |
| 4328786 | Coal burning grate | — | 1982-05-11 |