Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874060 | Device for receiving sound waves in a well | Charles Naville, Jean Laurent, Pascal Dedole | 1989-10-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874060 | Device for receiving sound waves in a well | Charles Naville, Jean Laurent, Pascal Dedole | 1989-10-17 |