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发明名称
Screw extractor
摘要
申请公布号
US1844241(A)
申请公布日期
1932.02.09
申请号
US19300503385
申请日期
1930.12.19
申请人
GREENFIELD TAP AND DIE CORPORATION
发明人
BRYANT ELMER J.
分类号
B25B27/18
主分类号
B25B27/18
代理机构
代理人
主权项
地址
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