Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5368098 | Stage tool | William A. Blizzard, Jr. | 1994-11-29 |
| 5318122 | Method and apparatus for sealing the juncture between a vertical well and one or more horizontal wells using deformable sealing means | Douglas J. Murray | 1994-06-07 |