Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4822634 | Longitudinal magnetic coated recording medium | Jun Takahashi, Shigeru Fukushima, Ken Itoh, Seiya Ogawa | 1989-04-18 |
TN
Toshikatu Narumi
Overall (1989): #48,418 of 140,708Top 35%
1
Patents 1989