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发明名称
A preventing apparatus and method for preventing a child lost by the measurement of distance and direction
摘要
申请公布号
KR100733500(B1)
申请公布日期
2007.06.28
申请号
KR20050053451
申请日期
2005.06.21
申请人
发明人
分类号
G08B21/02
主分类号
G08B21/02
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代理人
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