Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7660293 | Network, private branch exchange, and multi protocol communication terminal control method for use in the exchange | Yoshio Itagaki | 2010-02-09 |
| 7408910 | Network, private branch exchange, wireless LAN terminal, and multiprotocol communication terminal control method therefor | Yoshio Itagaki | 2008-08-05 |