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发明名称
摘要
申请公布号
KR200354328(Y1)
申请公布日期
2004.06.29
申请号
KR20040007994U
申请日期
2004.03.23
申请人
发明人
分类号
G04B45/04
主分类号
G04B45/04
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代理人
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