Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6831533 | Electromagnetic relay | Shinichi Sato, Yoshio Okamoto, Shigemitsu Aoki, Keiji Ikeda | 2004-12-14 |
| 6756868 | Electromagnetic relay | Shinichi Sato, Yoshio Okamoto, Shigemitsu Aoki, Keiji Ikeda | 2004-06-29 |