Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874924 | PTC heating device | Shinobu Yamamoto, Fumitoshi Hoshide, Michikazu Takeuchi, Shou Kotani | 1989-10-17 |
SY
Sumihiro Yasuda
Overall (1989): #54,115 of 140,708Top 40%
1
Patents 1989