Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885746 | Frequency converter | Takeo Fukushima, Masami Mizuguchi, Takahiro Furukawa, Yoshiaki Yato, Kenji Sato +1 more | 1989-12-05 |
| 4811341 | Hierarchical data transmission system | Takashi Yorita, Yoshiaki Yato, Yoshinori Nakamura, Kenji Satoh | 1989-03-07 |