Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9739275 | Self-cleaning disc valve for piston pump | Clark E. Robison, Michael C. Knoeller, Jeff Lembcke | 2017-08-22 |
| 8303272 | Hydraulically actuated downhole pump with gas lock prevention | Toby Pugh, Clark E. Robison | 2012-11-06 |
| 5236580 | Device for reclaiming dry cleaning solvent from a dry cleaning machine | — | 1993-08-17 |