Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4311538 | Method of sealing an inner cover arranged in a box annealing furnace used for producing grain-oriented silicon steel sheets | — | 1982-01-19 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4311538 | Method of sealing an inner cover arranged in a box annealing furnace used for producing grain-oriented silicon steel sheets | — | 1982-01-19 |