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发明名称
ЯКОРЬ ГИДРАВЛИЧЕСКИЙ
摘要
申请公布号
RU35819(U1)
申请公布日期
2004.02.10
申请号
RU20030129355U
申请日期
2003.10.08
申请人
发明人
分类号
E21B33/12
主分类号
E21B33/12
代理机构
代理人
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