Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6148664 | Method and apparatus for shutting in a well while leaving drill stem in the borehole | — | 2000-11-21 |
| 6029744 | Method and apparatus for retrieving fluid samples during drill stem tests | — | 2000-02-29 |
| 5864057 | Method and apparatus for conducting well production tests | — | 1999-01-26 |