Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4396868 | Lamp circuit with disconnected lamp detecting device | Toshisuke Watanabe, Shozo Taniguchi | 1983-08-02 |
| 4330778 | Device for detecting broken filaments in lamps | Kazuo Yamazaki, Katsumi Nomura | 1982-05-18 |