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发明名称
AUDIBLE SIGNAL PRESENCE/ABSENCE DETERMININGAPPARATUS FOR USE IN PCM
摘要
申请公布号
KR1019940005333(B1)
申请公布日期
1994.06.16
申请号
KR1019910006171
申请日期
1991.04.17
申请人
发明人
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主分类号
代理机构
代理人
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