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发明名称
Well apparatus
摘要
申请公布号
US3353605(A)
申请公布日期
1967.11.21
申请号
US19660555562
申请日期
1966.06.06
申请人
H. U. GARRETT
发明人
GARRETT HENRY U.;PETERS CLIFFORD M.;DINNING ROBERT W.
分类号
E21B43/12
主分类号
E21B43/12
代理机构
代理人
主权项
地址
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