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发明名称
An earplug-type alarm device
摘要
申请公布号
KR20110004573(U)
申请公布日期
2011.05.09
申请号
KR20090014202U
申请日期
2009.10.30
申请人
发明人
分类号
G04C23/02;G04C23/00
主分类号
G04C23/02
代理机构
代理人
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地址
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