Issued Patents 2003
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6668057 | Apparatus for receiving tone signal, apparatus for transmitting tone signal, and apparatus for transmitting or receiving tone signal | Takeshi Yamashita, Yoshiko Hase | 2003-12-23 |
| 6648168 | Insulated container | Takafumi Fujii | 2003-11-18 |