Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8069923 | Top suction fluid end | Stanley Stephenson, David Mark Stribling, Larry Edwin Guffee, Greg MaCauely | 2011-12-06 |
| 7963572 | Differential pitch hammerless connection with hydraulic driving mechanism | Brad Robert Bull, Leonard R. Case, Todd Dean | 2011-06-21 |