Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D302853 | Finned heat exchanger for electronic equipment | Nobuyoshi Takahashi, Masao Fujii, Yu Seshimo | 1989-08-15 |
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Yoshihiko Yamamoto
Overall (1989): #39,991 of 140,708Top 30%
1
Patents 1989