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发明名称
METHOD FOR DISPLAYING SPECIAL SUBSCRIBER IN PRIVATE BRANCH EXCHANGER
摘要
申请公布号
KR1019910005475(B1)
申请公布日期
1991.07.29
申请号
KR1019880005021
申请日期
1988.04.30
申请人
发明人
分类号
主分类号
代理机构
代理人
主权项
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