Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5153975 | Apparatus for effecting bedding-in by screwing and unscrewing of screwthreaded joints for the assembly of tubes | Michel Meurant | 1992-10-13 |
| 4665780 | Method of machining threaded pipe-ends | Bernard Plaquin | 1987-05-19 |
| 4641410 | Method and apparatus for making a joint for steel tubes | Bernard Plaquin | 1987-02-10 |
| 4614120 | Determination of the make-up torque for pipe joints | Bernard Plaquin, Herve Salkin | 1986-09-30 |