Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5639421 | High-hardness precipitation hardening steel for metallic mold | Jiro Ichikawa | 1997-06-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5639421 | High-hardness precipitation hardening steel for metallic mold | Jiro Ichikawa | 1997-06-17 |