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发明名称
Screw driver
摘要
申请公布号
US1783070(A)
申请公布日期
1930.11.25
申请号
US19300438093
申请日期
1930.03.22
申请人
BERGEMANN FREDERICK R
发明人
BERGEMANN FREDERICK R.
分类号
B25B23/10
主分类号
B25B23/10
代理机构
代理人
主权项
地址
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