Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4664205 | Hydraulic inner barrel in a drill string coring tool | J. Stanley Davis, Steven R. Radford | 1987-05-12 |
| 4606416 | Self activating, positively driven concealed core catcher | J. Stanley Davis, Steven R. Radford | 1986-08-19 |