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发明名称
APARATO OBTURADOR DE POZO
摘要
申请公布号
AR215233(A1)
申请公布日期
1979.09.28
申请号
AR19740251904
申请日期
1974.01.11
申请人
BAKER OIL TOOLS
发明人
分类号
E21B41/00;(IPC1-7):E21B41/00
主分类号
E21B41/00
代理机构
代理人
主权项
地址
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