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经营范围
发明名称
PROCESSO PARA PERFURAR ORIFICIOS EM ROCHAS
摘要
申请公布号
BR9106955(A)
申请公布日期
1993.08.17
申请号
BR1991PI06955
申请日期
1991.09.27
申请人
TAMROCK OY
发明人
HEIKKI RINNEMAA
分类号
E21B7/02;E21B15/00;E21B15/04;E21B19/08;E21B44/00;(IPC1-7):E21B44/00
主分类号
E21B7/02
代理机构
代理人
主权项
地址
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