Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4328994 | Mining apparatus and method | Gary A. Hakes | 1982-05-11 |
| 4310197 | Mining and bolting method and apparatus | Gary A. Hakes | 1982-01-12 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4328994 | Mining apparatus and method | Gary A. Hakes | 1982-05-11 |
| 4310197 | Mining and bolting method and apparatus | Gary A. Hakes | 1982-01-12 |