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发明名称
CONTROL CIRCUIT AND METHOD FOR OPTICAL DIAL SENSING USER IN TELEPHONE
摘要
申请公布号
KR1019940008775(B1)
申请公布日期
1994.09.26
申请号
KR1019910024741
申请日期
1991.12.27
申请人
发明人
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主分类号
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代理人
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