Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4761265 | Spring copper alloy for electric and electronic parts | Yoshio Nakasato | 1988-08-02 |
| 4620885 | Spring material for electric and electronic parts | Shinji Sato | 1986-11-04 |