Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877667 | Optical disc with inhibited thermal distortion | Michinobu Hattori, Hidemitsu Fujisawa | 1989-10-31 |
AK
Akio Kusaura
Overall (1989): #134,638 of 140,708Top 100%
1
Patents 1989