Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6973969 | Apparatus and methods for preventing or limiting rotation of cementing plugs | Craig W. Roddy | 2005-12-13 |
| 6868908 | Anti-rotation method and apparatus for limiting rotation of cementing plugs | — | 2005-03-22 |