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发明名称
JUNTA DE EXPANSAO
摘要
申请公布号
BR8600121(A)
申请公布日期
1986.12.30
申请号
BR1986PI00121
申请日期
1986.01.14
申请人
BAKER OIL TOOLS, INC.
发明人
ALEJANDRO LUPPI
分类号
E21B17/02;(IPC1-7):E21B17/02
主分类号
E21B17/02
代理机构
代理人
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地址
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