Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9422771 | Reverse circulation bit assembly | Mark L. Jones, Kenneth M. Curry, Kyle Edward Johnson | 2016-08-23 |
| 8336649 | Drill bit for earth boring | Mark L. Jones, Kenneth M. Curry | 2012-12-25 |