Issued Patents 2020
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10648258 | Sealing and controlling of fluid pressure in an annular fluid passageway in a wellbore related process | Gerardus Godefridus Johannes Van Og, Joop Roodenburg | 2020-05-12 |