Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4806178 | Non-heat refined steel bar having improved toughness | Yutaka Tsuchida, Nobukazu Suzuki | 1989-02-21 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4806178 | Non-heat refined steel bar having improved toughness | Yutaka Tsuchida, Nobukazu Suzuki | 1989-02-21 |