Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874787 | Insecticidal article for electric fumigator | Kunihiro Okada, Satoshi Ohi, Shiro Oyama, Yasuharu Takei | 1989-10-17 |
| 4874924 | PTC heating device | Fumitoshi Hoshide, Michikazu Takeuchi, Shou Kotani, Sumihiro Yasuda | 1989-10-17 |