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发明名称
Air pressure Breaker
摘要
申请公布号
KR200458064(Y1)
申请公布日期
2012.01.18
申请号
KR20090016449U
申请日期
2009.12.17
申请人
发明人
分类号
E21B10/36;E21B1/30
主分类号
E21B10/36
代理机构
代理人
主权项
地址
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