Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5249625 | Soft set overshot fishing tool | James W. Ward | 1993-10-05 |
| 5018580 | Section milling tool | — | 1991-05-28 |
| 5014780 | Long distance section mill for pipe in a borehole | — | 1991-05-14 |
| 5012866 | Drill stem mud wiping apparatus | — | 1991-05-07 |
| 4923011 | Drill stem mud wiping apparatus | — | 1990-05-08 |
| 4893675 | Section milling tool | — | 1990-01-16 |
| 4749044 | Apparatus for washover featuring controllable circulating valve | E. E. Herod, Mack Ponder | 1988-06-07 |
| 4394884 | Shock sub | — | 1983-07-26 |
| 4344774 | Degasser | — | 1982-08-17 |