Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5297643 | Cold headed center vacuum drill bit | Robert H. Montgomery, Jr., James E. Elam, Paul Ewing | 1994-03-29 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5297643 | Cold headed center vacuum drill bit | Robert H. Montgomery, Jr., James E. Elam, Paul Ewing | 1994-03-29 |