Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4352602 | Roof support for a mine gallery which extends at a relatively large angle inclined to the horizontal | — | 1982-10-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4352602 | Roof support for a mine gallery which extends at a relatively large angle inclined to the horizontal | — | 1982-10-05 |