Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6484609 | Method of producing press-forming punch and die | Masafumi Nakamura, Yoshikazu Nakamura | 2002-11-26 |
| 6474196 | Method of producing press-forming punch and die | Masafumi Nakamura, Yoshikazu Nakamura | 2002-11-05 |