Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5680049 | Apparatus for measuring formation resistivity through a conductive casing having a coaxial tubing inserted therein | Robert William Gissler, Otto N. Fanini, Jacques Maissa, Peter Rellinger | 1997-10-21 |