Issued Patents 2011
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7911876 | Method for initializing receiver channels in a cement bond logging tool | John Marshall | 2011-03-22 |
| 7902469 | Perforation gun pressure-actuated electrical switches and methods of use | — | 2011-03-08 |