Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5892174 | Structure constructed by ultrasonic welding for accommodating an electric apparatus | — | 1999-04-06 |
| 5319331 | Electromagnetic relay | Hiroshi Hirata | 1994-06-07 |
| 4700162 | Contact mechanism of electrical contact pieces | Shigeru Kobayashi | 1987-10-13 |