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发明名称
U-INTERFACE CHANNEL APPARATUS FOR SMALL SIZED ISDN SUBSCRIBER'S GROUP
摘要
申请公布号
KR1019910005499(B1)
申请公布日期
1991.07.31
申请号
KR1019880017360
申请日期
1988.12.23
申请人
发明人
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主分类号
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