Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4814914 | Disc driving device having a reinforced base | Ippei Hagiwara, Etsuo Tamura | 1989-03-21 |
KY
Kazuhiro Yasumoto
Overall (1989): #89,335 of 140,708Top 65%
1
Patents 1989