Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9422966 | Shear member post shear segment retention apparatus | Levi B. Oberg, Gregory L. Hern, YingQing Xu, Douglas J. Lehr | 2016-08-23 |
| 9284803 | One-way flowable anchoring system and method of treating and producing a well | Patrick C. Stone, Douglas J. Lehr, Gregory L. Hern, Levi B. Oberg | 2016-03-15 |
| 6464008 | Well completion method and apparatus | Ray Vincent, Martin P. Coronado, Rocky A. Turley | 2002-10-15 |
| 6260618 | Method for locating placement of a guide stock in a multilateral well | John P. Davis, Edward T. Wood | 2001-07-17 |
| 4953617 | Apparatus for setting and retrieving a bridge plug from a subterranean well | Richard J. Ross | 1990-09-04 |