Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877986 | Rotor of magnetic generator | — | 1989-10-31 |
YS
Yuzuru Shimizu
Overall (1989): #39,340 of 140,708Top 30%
1
Patents 1989