Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4833915 | Method and apparatus for detecting formation hydrocarbons in mud returns, and the like | Howard H. Ferrell | 1989-05-30 |
| 4452325 | Composite structure for cutting tools | Elard L. Haden | 1984-06-05 |
| 4285615 | Corrosion resistant tension leg cables | — | 1981-08-25 |