Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5308149 | Non-explosive drill hole pressurization method and apparatus for controlled fragmentation of hard compact rock and concrete | Chapman Young, III | 1994-05-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5308149 | Non-explosive drill hole pressurization method and apparatus for controlled fragmentation of hard compact rock and concrete | Chapman Young, III | 1994-05-03 |