Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6667621 | Method and apparatus for determining the resistivity of a formation surrounding a cased well | — | 2003-12-23 |
| 6545477 | Method and apparatus for determining the resistivity of a formation through which a cased well passes | Paul Beguin, Patrick Ehret, Francois Hecquet, Peter van der Wal, Marie-Therese Gounot | 2003-04-08 |