Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4862090 | Measuring pad arrangement for a logging sonde | Jacques Tromelin | 1989-08-29 |
| 4595055 | Centering apparatus | — | 1986-06-17 |
| 4286217 | Device for electrode-type electrical logging tools and tool incorporating said device | Jean-Pascal Planche, Jacques Tromelin | 1981-08-25 |