Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5653542 | Tape cassette | Kiyoshi Sugimoto, Koshiro Yamaguchi, Takashi Horiuchi | 1997-08-05 |
| 5620268 | Composite cassette including a tape cassette and a ribbon cassette | Koshiro Yamaguchi, Kiyoshi Sugimoto | 1997-04-15 |