Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4831891 | Power transmission device for a tractor | Sadanori Nishimura, Yuji Kishizawa | 1989-05-23 |
YK
Yukio Kato
Overall (1989): #39,670 of 140,708Top 30%
1
Patents 1989