Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6700973 | System for transmitting DTMF signal and communication equipment thereof | Shinya Suzuki, Kimitoshi Takeuchi, Makoto Oohashi | 2004-03-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6700973 | System for transmitting DTMF signal and communication equipment thereof | Shinya Suzuki, Kimitoshi Takeuchi, Makoto Oohashi | 2004-03-02 |