Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D291079 | Car speaker | — | 1987-07-28 |
| D290699 | Loudspeaker | Hitoshi Nakamura | 1987-07-07 |
| D289894 | Speaker grille | Tetsuya Kamata | 1987-05-19 |
| D289282 | Speaker grille | Tetsuya Kamata | 1987-04-14 |
| D280817 | Loudspeaker | — | 1985-10-01 |