Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7738649 | Computer system using identification information and control method thereof | Koji Abe, Shinya Isumi, Toru Imamura | 2010-06-15 |
| 6765999 | Private branch exchange system | — | 2004-07-20 |