Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4790745 | Automatic fire-extinguishing device for oil burner | Yutaka Nakanishi, Toshihiko Yamada | 1988-12-13 |
| 4562732 | Device for detecting liquid amount in a vessel | Junji Kitagawa, Shigeyuki Akita, Akira Fukami | 1986-01-07 |