Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4844377 | Tape cassette | Yoshinori Shiomi, Akihiro Nishimura, Masao Kawagishi, Hideki Sakumoto, Masahiko Matsui | 1989-07-04 |
TK
Toshibumi Kamiyama
Overall (1989): #48,890 of 140,708Top 35%
1
Patents 1989