Issued Patents 2004
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6826261 | Subscriber testing system | — | 2004-11-30 |
| 6788684 | Cell bridge apparatus and cell bridging method as well as information transmission system having cell bridge apparatus | Hiromichi Makishima, Yuji Obana, Toshiaki Ookubo, Hideo Abe | 2004-09-07 |
| 6762998 | Access network system | Shuichi Nakagawa | 2004-07-13 |
| 6754309 | Communication device and access network device | Shuichi Nakagawa | 2004-06-22 |