Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4331773 | Refractory composition | Yasuo Hongo, Masao Miyawaki | 1982-05-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4331773 | Refractory composition | Yasuo Hongo, Masao Miyawaki | 1982-05-25 |