Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6843333 | Impregnated rotary drag bit | Volker Richert, Van Jordan Brackin, Matthew R. Isbell, Douglas J. Bobrosky | 2005-01-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6843333 | Impregnated rotary drag bit | Volker Richert, Van Jordan Brackin, Matthew R. Isbell, Douglas J. Bobrosky | 2005-01-18 |