Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6896300 | External refacing indicator for a tool joint | — | 2005-05-24 |
| 6712402 | Double shoulder oilfield tubular connection | — | 2004-03-30 |
| 5908212 | Ultra high torque double shoulder tool joint | Jackie E. Smith, Gerald E. Wilson | 1999-06-01 |
| 5743301 | Metal pipe having upset ends | — | 1998-04-28 |
| 5517843 | Method for making upset ends on metal pipe and resulting product | — | 1996-05-21 |
| 5052657 | Ball valve | — | 1991-10-01 |
| 5040622 | Variable depth grooved drill string member | Edmond I. Bailey | 1991-08-20 |
| 4262760 | Reamer-stabilizer | Glenn L. Allison, Daniel B. Justman | 1981-04-21 |