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发明名称
CIRCUIT FOR SENSING ON-USE OF TELEPHONE
摘要
申请公布号
KR900002478(Y1)
申请公布日期
1990.03.26
申请号
KR19870006187U
申请日期
1987.04.27
申请人
SAMSUNG ELECTRONICS CO.LTD.
发明人
CHOI WOO-SUNG
分类号
H04M1/72;(IPC1-7):H04M1/72
主分类号
H04M1/72
代理机构
代理人
主权项
地址
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