Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4856614 | Process and device for seismic prospecting of a medium with induced waves created artificially in a bore-hole | Georges Arens, Jacques Delvaux | 1989-08-15 |
| 4811814 | Measuring device for a seismic profile within a well-bore | Philippe Staron | 1989-03-14 |