Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6392991 | Communication network, node apparatus used in the network, and their control method | Takahisa Yamamoto | 2002-05-21 |
| 6385206 | Communication network and method, and node and exchange node used therein | — | 2002-05-07 |