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发明名称
Tool for fracturing earth formations
摘要
申请公布号
US2776014(A)
申请公布日期
1957.01.01
申请号
US19530397966
申请日期
1953.12.14
申请人
SOCONY MOBIL OIL COMPANY, INC.
发明人
LEE JOHN A.;BARCLAY HARRY A.;JOHNSON MALCOLM O.
分类号
E21B33/127;E21B43/26
主分类号
E21B33/127
代理机构
代理人
主权项
地址
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