Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4850760 | Method of finishing gears | Hiromu Okunishi | 1989-07-25 |
RT
Ryuichi Tsukamoto
Overall (1989): #59,710 of 140,708Top 45%
1
Patents 1989