Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D333917 | Earphone case | Takefumi Daido | 1993-03-16 |
| D323167 | Headphone | Nobutsugu Yamazaki | 1992-01-14 |
| D318864 | Earphone | Takefumi Daido | 1991-08-06 |
| D316861 | Headphone | Shingo Yoda | 1991-05-14 |
| D314574 | Combined tape player and earphone | — | 1991-02-12 |