Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D305260 | Electric radiant heater | — | 1989-12-26 |
| 4872829 | Fire-extinguishing device for oil burner | Kazuharu Nakamura, Yutaka Nakanishi, Toshihiko Yamada, Kenji Nakamura, Kiyonobu Itoh | 1989-10-10 |
| D301163 | Oil-fired space heater or similar article | — | 1989-05-16 |
| 4810185 | Fire-extinguishing device for oil burner | Kazuharu Nakamura, Yutaka Nakanishi, Toshihiko Yamada, Kenji Nakamura, Kiyonobu Itoh | 1989-03-07 |
| 4797088 | Safety device for oil burner | Kazuharu Nakamura, Yutaka Nakanishi, Toshihiko Yamada, Yuji Sanada | 1989-01-10 |