Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6407984 | Line failure notifying apparatus for terminal apparatus | Kazuyuki Ohmori, Shigeru Murata, Takashi Hashimoto, Akiko Kobayashi | 2002-06-18 |
| 6404881 | Exchange and an exchange system in a communication network | Shigeru Murata | 2002-06-11 |