Issued Patents 2005
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6976534 | Slip element for use with a downhole tool and a method of manufacturing same | Mike Sutton, Donald W. Winslow, Donald R. Smith | 2005-12-20 |
| 6966386 | Downhole sealing tools and method of use | Paul D. Ringgenberg, Gregory W. Vargus, Lee W. Stepp, Donald R. Smith, Ronald L. Hinkie | 2005-11-22 |
| 6896061 | Multiple zones frac tool | Iosif Hriscu, Gregory W. Vargus, Thomas W. Hawkins, John T. Brandell | 2005-05-24 |