Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884633 | A hydraulic remotely-controlled bleeder valve for a well head | Jean-Yves Le Gac, Denis Devilleger | 1989-12-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884633 | A hydraulic remotely-controlled bleeder valve for a well head | Jean-Yves Le Gac, Denis Devilleger | 1989-12-05 |