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经营范围
发明名称
Screw driver
摘要
申请公布号
US2116775(A)
申请公布日期
1938.05.10
申请号
US19360066963
申请日期
1936.03.03
申请人
BLACKBURN GEORGE P
发明人
BLACKBURN GEORGE P.
分类号
B25B15/00
主分类号
B25B15/00
代理机构
代理人
主权项
地址
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