Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4585079 | Method and a machine for handling drill pipes | Marc Lemaire | 1986-04-29 |
| 4567952 | Process and apparatus for locking and releasing of a drilling shaft with essentially vertical axis | Marc Lemaire | 1986-02-04 |
| 4545269 | Machine to apply a screwing or unscrewing torque | Marc Lemaire | 1985-10-08 |