Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850649 | Rotatable cutting bit | Robert H. Montgomery, Jr., Lawrence R. Burns | 1989-07-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850649 | Rotatable cutting bit | Robert H. Montgomery, Jr., Lawrence R. Burns | 1989-07-25 |