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发明名称
Method and apparatus for connecting well casings to liners
摘要
申请公布号
US2644523(A)
申请公布日期
1953.07.07
申请号
US19490081054
申请日期
1949.03.12
申请人
BROWN CICERO C
发明人
BROWN CICERO C.
分类号
E21B43/10
主分类号
E21B43/10
代理机构
代理人
主权项
地址
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