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发明名称
PLUG FOR TEMPORARILY SEALING A HOLLOW CYLINDRICAL MEMBER
摘要
申请公布号
GB2004018(A)
申请公布日期
1979.03.21
申请号
GB19780032448
申请日期
1978.08.07
申请人
HALLIBURTON CO
发明人
分类号
E02B17/02;F16K7/20;F16L55/11;F16L55/132;(IPC1-7):F16L55/12
主分类号
E02B17/02
代理机构
代理人
主权项
地址
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