Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842081 | Simultaneous drilling and casing device | — | 1989-06-27 |
| 4800966 | Devices for drilling branched wells | Christian Mariotti, Patrick Rousselet | 1989-01-31 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4842081 | Simultaneous drilling and casing device | — | 1989-06-27 |
| 4800966 | Devices for drilling branched wells | Christian Mariotti, Patrick Rousselet | 1989-01-31 |