Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882559 | Permanent magnet type demagnetizing head | Kazuya Yamazaki | 1989-11-21 |
NK
Noboru Koizumi
Overall (1989): #72,885 of 140,708Top 55%
1
Patents 1989