Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4806809 | Rotary shaft coupling device | Kazuhisa Kubota, Hisashi Hirose, Yasuo Miyake, Sinzi Mizutani | 1989-02-21 |
TS
Takao Sakakibara
Overall (1989): #52,480 of 140,708Top 40%
1
Patents 1989