Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9243454 | Apparatus for keeping a downhole drilling tool vertically aligned | — | 2016-01-26 |
| 9115752 | Bearing assembly | — | 2015-08-25 |
| 8215841 | Bearing assembly for use in earth drilling | — | 2012-07-10 |
| 7717197 | Apparatus for keeping a down hole drilling tool vertically aligned | — | 2010-05-18 |
| 5647446 | Two way hydraulic drilling jar | — | 1997-07-15 |
| 5377771 | Sealed bearing assembly used in earth drilling | — | 1995-01-03 |
| 5351766 | Flow restricter for mud lubricated earth drilling motors | Dean Foote | 1994-10-04 |
| 5343966 | Adjustable bent housing | Dean Foote | 1994-09-06 |
| 5217080 | Sealing system for a sealed bearing assembly | Dean Foote | 1993-06-08 |
| 5123493 | Valve used in a hydraulic drilling jar | — | 1992-06-23 |
| 5094305 | Orientatable adjustable bent sub | — | 1992-03-10 |
| 4813497 | Adjustable bent sub | — | 1989-03-21 |
| 4772246 | Downhole motor drive shaft universal joint assembly | — | 1988-09-20 |
| 4745982 | Adjustable bent sub | — | 1988-05-24 |
| 4683964 | Downhole drill bit drive apparatus | — | 1987-08-04 |
| 4230197 | Bumping and jarring tool | — | 1980-10-28 |