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发明名称
MARTELO HIDRAULICO
摘要
申请公布号
BR9103378(A)
申请公布日期
1992.05.05
申请号
BR1991PI03378
申请日期
1991.08.06
申请人
BERNARD LIONEL GIEN
发明人
BERNARD LIONEL GIEN
分类号
E21B7/18;(IPC1-7):E21B7/18
主分类号
E21B7/18
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