Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4825072 | Method and apparatus for determining well fluid flow velocity using a nonradioactive tracer | Vernie C. McWhirter, David P. Hollingsworth | 1989-04-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4825072 | Method and apparatus for determining well fluid flow velocity using a nonradioactive tracer | Vernie C. McWhirter, David P. Hollingsworth | 1989-04-25 |