Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D289947 | Audio disc player | Fumihito Katou, Kazuhiko Nishiyama, Kazuhiko Hiraoka, Takao Itoh | 1987-05-26 |
| D286041 | Audio disc player | Kazuhiko Hiraoka, Kazuhiko Nishiyama, Takao Itoh | 1986-10-07 |