Issued Patents All Time
Showing 51–61 of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4627488 | Isolation gravel packer | — | 1986-12-09 |
| 4613159 | Pressure-assisted dynamic seal apparatus | Allen E. Harris | 1986-09-23 |
| 4606408 | Method and apparatus for gravel-packing a well | Gary D. Zunkel, Lee W. Stepp | 1986-08-19 |
| 4574882 | Plug container | — | 1986-03-11 |
| 4441721 | High temperature packer with low temperature setting capabilities | Allen E. Harris | 1984-04-10 |
| 4421165 | Multiple stage cementer and casing inflation packer | — | 1983-12-20 |
| 4369840 | Anchor and anchor positioner assembly | Eugene E. Baker | 1983-01-25 |
| 4364430 | Anchor positioner assembly | — | 1982-12-21 |
| 4295524 | Isolation gravel packer | Eugene E. Baker | 1981-10-20 |
| 4273190 | Method and apparatus for gravel packing multiple zones | Eugene E. Baker, Odie R. S. Davis, Nolan M. Workman | 1981-06-16 |
| 4270608 | Method and apparatus for gravel packing multiple zones | James D. Hendrickson, Pat M. White, Odie R. S. Davis, Nolan M. Workman, Eugene E. Baker | 1981-06-02 |