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发明名称
Power operated apparatus for tightening threaded fastening elements
摘要
申请公布号
US2867144(A)
申请公布日期
1959.01.06
申请号
US19520315794
申请日期
1952.10.20
申请人
ADELE M. STEVENS
发明人
STEVENS ROBERT T.
分类号
B25B23/145
主分类号
B25B23/145
代理机构
代理人
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地址
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