Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4553884 | Boring tool and method of reducing vibrations therein | Gary W. Fitzgerald, Paula M. Penrod | 1985-11-19 |
| 4549615 | Single-pass notching and drilling tool and method of drilling a blast role therewith | Dah-Ben Liang | 1985-10-29 |