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发明名称
ON-HOOK DIALING AND ON-HOLD MUSIC GENERATION CONTROL CIRCUIT FOR TELEPHONE
摘要
申请公布号
KR1019920000998(B1)
申请公布日期
1992.02.01
申请号
KR1019870014515
申请日期
1987.12.18
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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