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发明名称
Method and apparatus for cementing wells
摘要
申请公布号
US1860669(A)
申请公布日期
1932.05.31
申请号
US19320588110
申请日期
1932.01.22
申请人
PALMER HALLIBURTON ERLE
发明人
HALLIBURTON ERLE PALMER
分类号
E21B33/14;E21B33/16
主分类号
E21B33/14
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