Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4860422 | Rebuilding of the stack, bosh and hearth of a blast furnace using a remote controlled refractory gunning device | — | 1989-08-29 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4860422 | Rebuilding of the stack, bosh and hearth of a blast furnace using a remote controlled refractory gunning device | — | 1989-08-29 |