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发明名称
Power wrench for breaking threaded joints
摘要
申请公布号
US3256757(A)
申请公布日期
1966.06.21
申请号
US19630251582
申请日期
1963.01.15
申请人
UNITED STATES STEEL CORPORATION
发明人
KOCHAVER THEODORE J.
分类号
E21B19/16
主分类号
E21B19/16
代理机构
代理人
主权项
地址
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