Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6470015 | System and device for preventing wiretap | Masayuki Koga | 2002-10-22 |
| 6385200 | Broadcast control system, network element, and switching node apparatus with broadcast cell routing capabilities in asynchronous transmission mode network | Shinichi Ishigaki | 2002-05-07 |