| 发明名称 |
Closed loop digital network consisting of telephone exchange and telephone push-button dialing system and method for transmission of signal through said closed loop digital network |
| 摘要 |
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| 申请公布号 |
CZ20023614(A3) |
申请公布日期 |
2004.06.16 |
| 申请号 |
CZ20020003614 |
申请日期 |
2002.11.01 |
| 申请人 |
CHEN HENG-CHIEN;CHEN CHIN-SHENG;TSAI TSUAN-YU;CHING HAN-KUO |
发明人 |
CHEN HENG-CHIEN |
| 分类号 |
H04M7/00;H04M11/00;(IPC1-7):H04M7/00 |
主分类号 |
H04M7/00 |
| 代理机构 |
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