Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882559 | Permanent magnet type demagnetizing head | Noboru Koizumi | 1989-11-21 |
KY
Kazuya Yamazaki
Overall (1989): #89,348 of 140,708Top 65%
1
Patents 1989