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发明名称
OFFICE LINE INCOMING ALARM BELL GENERATINGCIRCUIT AND METHOD
摘要
申请公布号
KR1019940005218(B1)
申请公布日期
1994.06.13
申请号
KR1019910006426
申请日期
1991.04.22
申请人
发明人
分类号
主分类号
代理机构
代理人
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