Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7958936 | Downhole formation sampling | Malcolm Douglas McGregor, John C. Welch, Michael T. Pelletier, Thomas Ballweg | 2011-06-14 |
| 7866387 | Packer variable volume excluder and sampling method therefor | Mark A. Proett, Michael T. Pelletier | 2011-01-11 |