Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7832966 | Drill for making flat bottom hole | Michael D. Shultz, Stephen M. George, David L. Ford | 2010-11-16 |
| 7140815 | Drill for making flat bottom hole | Stephen M. George, David L. Ford | 2006-11-28 |