Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5346025 | Drill bit with improved insert cutter pattern and method of drilling | Carl W. Keith | 1994-09-13 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5346025 | Drill bit with improved insert cutter pattern and method of drilling | Carl W. Keith | 1994-09-13 |