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发明名称
DAA CIRCUITRY AND METHOD FOR CONNECTING PHONE LINES HAVING A DC HOLDING
摘要
申请公布号
KR20010052867(A)
申请公布日期
2001.06.25
申请号
KR1020007014204
申请日期
2000.12.14
申请人
发明人
分类号
H04M11/00
主分类号
H04M11/00
代理机构
代理人
主权项
地址
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