Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8074718 | Ball seat sub | — | 2011-12-13 |
| 8047280 | Drillable bridge plug | Lap Tran, Piro Shkurti, George J. Melenyzer | 2011-11-01 |
| 7980300 | Drillable bridge plug | James A. Simson, George J. Melenyzer | 2011-07-19 |