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发明名称
DEVICE FOR PREVENTING BAD SMELL AND FLOWING BACKWARD
摘要
申请公布号
KR20090001900(U)
申请公布日期
2009.02.27
申请号
KR20070014042U
申请日期
2007.08.24
申请人
发明人
分类号
E03C1/286;E03C1/28
主分类号
E03C1/286
代理机构
代理人
主权项
地址
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