Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836868 | Permanent magnet and method of producing same | Kohichi Yajima, Tetsuhito Yoneyama | 1989-06-06 |
OK
Osamu Kohmoto
Overall (1989): #71,929 of 140,708Top 55%
1
Patents 1989