Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4935717 | Resistor device for controlling a blower | Katsuyoshi Osawa, Shinichi Ohi, Tadahiro Takahashi, Kazuo Noguchi | 1990-06-19 |
| 4626820 | Thermoswitch | Tadahiro Takahashi, Shinichi Ohi | 1986-12-02 |