Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872829 | Fire-extinguishing device for oil burner | Yoshio Mito, Yutaka Nakanishi, Toshihiko Yamada, Kenji Nakamura, Kiyonobu Itoh | 1989-10-10 |
| 4810185 | Fire-extinguishing device for oil burner | Yoshio Mito, Yutaka Nakanishi, Toshihiko Yamada, Kenji Nakamura, Kiyonobu Itoh | 1989-03-07 |
| 4797088 | Safety device for oil burner | Yoshio Mito, Yutaka Nakanishi, Toshihiko Yamada, Yuji Sanada | 1989-01-10 |