Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6997253 | Anti-rotation method and apparatus for limiting rotation of cementing plugs | Earl Webb, Michael D. Stevens | 2006-02-14 |
| 6174244 | Golf club, kit used with a golf club and method of adjusting a golf club grip | — | 2001-01-16 |
| 6137062 | Ball grid array with recessed solder balls | — | 2000-10-24 |
| 5355959 | Differential pressure operated circulating and deflation valve | Jeffrey S. Walter, James C. Tucker | 1994-10-18 |
| 4470465 | Ball type shut in tool | William P. Bellenger | 1984-09-11 |
| 4438933 | Hydraulic set high temperature isolation packer | — | 1984-03-27 |
| 4328866 | Check valve assembly | — | 1982-05-11 |
| 4258793 | Oil well testing string bypass valve | Thomas E. McGraw | 1981-03-31 |