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发明名称
Screw driver
摘要
申请公布号
US2028546(A)
申请公布日期
1936.01.21
申请号
US19350009868
申请日期
1935.03.07
申请人
WILLIAM A. COX
发明人
JOHN FRANK B.
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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