Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8638004 | Apparatus and method for producing electric power from injection of water into a downhole formation | — | 2014-01-28 |
| 6036451 | Shaft assemblies for lineshaft turbine pump | Robert D. Hardin, Gerald D. Tomkins | 2000-03-14 |