Issued Patents 1982
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4315417 | Borehole logging tool cryostat | — | 1982-02-16 |
| 4313317 | Borehole logging tool cryostat | Sylvain Janssen, Jean-Robert Tourret, Roland Allesch | 1982-02-02 |
| 4312192 | Borehole logging tool cryostat | Sylvain Janssen, Jean-Robert Tourret | 1982-01-26 |