Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4796723 | System for transmitting energy through an apparatus usable for subsoil prospection, lowered inside a well or drill hole | Jean Laurent, Charles Naville | 1989-01-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4796723 | System for transmitting energy through an apparatus usable for subsoil prospection, lowered inside a well or drill hole | Jean Laurent, Charles Naville | 1989-01-10 |