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发明名称
PLUGGING WELL PIPE PERFORATIONS
摘要
申请公布号
CA850996(A)
申请公布日期
1970.09.08
申请号
CAD850996
申请日期
申请人
MOBIL OIL CORPORATION
发明人
CARL A. DAVIES
分类号
主分类号
代理机构
代理人
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地址
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