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发明名称
Screw driver attachment
摘要
申请公布号
US2206364(A)
申请公布日期
1940.07.02
申请号
US19380213511
申请日期
1938.06.13
申请人
PARK METALWARE CO. INC.
发明人
PETRE JOHN N.
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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