Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8378767 | Electromagnetic contact device | Koji Okubo, Yasuhiro Naka, Toshikatsu Ohgami | 2013-02-19 |
| 5589809 | Thermal overload relay with mis-readjustment preventing device | Kuniyuki Kogawa | 1996-12-31 |