Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4845574 | Apparatus for recording and reproducing digital signals on magnetic tape | Hiroshi Ii, Katsubumi Koyanagi | 1989-07-04 |
SY
Syuhei Yasuda
Overall (1989): #53,957 of 140,708Top 40%
1
Patents 1989