Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7949119 | Telephone exchange system | — | 2011-05-24 |
| 7039019 | Telephone exchanging apparatus and telephone system | Norimasa Niiya, Koji Shima | 2006-05-02 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7949119 | Telephone exchange system | — | 2011-05-24 |
| 7039019 | Telephone exchanging apparatus and telephone system | Norimasa Niiya, Koji Shima | 2006-05-02 |