Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851052 | Method of producing steel plate with good low-temperature toughness | Koyoshi Nishioka, Hiroshi Tamehiro | 1989-07-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4851052 | Method of producing steel plate with good low-temperature toughness | Koyoshi Nishioka, Hiroshi Tamehiro | 1989-07-25 |