Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4872171 | Method for recording digital data so as to avoid operational error on reproduction | Tokihiro Takahashi | 1989-10-03 |
SW
Shinichi Wakumura
Overall (1989): #56,555 of 140,708Top 45%
1
Patents 1989