Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872829 | Fire-extinguishing device for oil burner | Kazuharu Nakamura, Yoshio Mito, Yutaka Nakanishi, Kenji Nakamura, Kiyonobu Itoh | 1989-10-10 |
| 4854858 | Oil reservoir for oil burner | Yutaka Nakanishi | 1989-08-08 |
| 4810185 | Fire-extinguishing device for oil burner | Kazuharu Nakamura, Yoshio Mito, Yutaka Nakanishi, Kenji Nakamura, Kiyonobu Itoh | 1989-03-07 |
| 4805589 | Fire-extinguishing device for oil burner | Yutaka Nakanishi, Shigeo Gamou | 1989-02-21 |
| 4797088 | Safety device for oil burner | Kazuharu Nakamura, Yoshio Mito, Yutaka Nakanishi, Yuji Sanada | 1989-01-10 |