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发明名称
Wrench
摘要
申请公布号
US2181621(A)
申请公布日期
1939.11.28
申请号
US19380214481
申请日期
1938.06.18
申请人
JOHNSON ADAM E
发明人
JOHNSON ADAM E.
分类号
B25B13/14;B25B13/18
主分类号
B25B13/14
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