Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8047307 | Hybrid drill bit with secondary backup cutters positioned with high side rake angles | Rudolf Carl Pessier | 2011-11-01 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8047307 | Hybrid drill bit with secondary backup cutters positioned with high side rake angles | Rudolf Carl Pessier | 2011-11-01 |