Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4815342 | Method for modeling and building drill bits | James F. Brett, Tommy M. Warren | 1989-03-28 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4815342 | Method for modeling and building drill bits | James F. Brett, Tommy M. Warren | 1989-03-28 |