Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4273190 | Method and apparatus for gravel packing multiple zones | Eugene E. Baker, David D. Szarka, Odie R. S. Davis | 1981-06-16 |
| 4270608 | Method and apparatus for gravel packing multiple zones | James D. Hendrickson, Pat M. White, Odie R. S. Davis, Eugene E. Baker, David D. Szarka | 1981-06-02 |