Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10047882 | Coupling members for coupling a body of an earth-boring drill tool to a drill string, earth-boring drilling tools including a coupling member, and related methods | John H. Stevens, Jimmy W. Eason | 2018-08-14 |
| 9206651 | Coupling members for coupling a body of an earth-boring drill tool to a drill string, earth-boring drilling tools including a coupling member, and related methods | John H. Stevens, Jimmy W. Eason | 2015-12-08 |
| 5324914 | Method and apparatus for welding precipitation hardenable materials | Holt A. Murray, Jr., John O. Ratka, William D. Spiegelberg | 1994-06-28 |