Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8579046 | Pressure compensator for drill bit | Michael B. Crawford | 2013-11-12 |
| 8448723 | Seal assembly for drill bit | Micheal Burl Crawford, Richard A. Flak | 2013-05-28 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8579046 | Pressure compensator for drill bit | Michael B. Crawford | 2013-11-12 |
| 8448723 | Seal assembly for drill bit | Micheal Burl Crawford, Richard A. Flak | 2013-05-28 |