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发明名称
CENTRAL OFFICE LINE CALL CONNECTION METHOD BY PRIVATE TRUNK LINE IN PRIVATE EXCHANGER
摘要
申请公布号
KR1019950003687(B1)
申请公布日期
1995.04.17
申请号
KR1019920004989
申请日期
1992.03.26
申请人
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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