Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864273 | Variable resistor | Takoyoshi Tsuzuki, Ryohei Yabuno, Masami Ishii | 1989-09-05 |
| 4821011 | Pressure sensor | Ryohei Yabuno, Masami Ishii | 1989-04-11 |
MK
Mitsuko Kotaki
Overall (1989): #19,891 of 140,708Top 15%
2
Patents 1989