Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5505272 | Drill bits | — | 1996-04-09 |
| 5025871 | Drilling method and rotary drill bit crown | Aulette Stewart | 1991-06-25 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5505272 | Drill bits | — | 1996-04-09 |
| 5025871 | Drilling method and rotary drill bit crown | Aulette Stewart | 1991-06-25 |