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发明名称
Spiral broach
摘要
申请公布号
US2011630(A)
申请公布日期
1935.08.20
申请号
US19320646541
申请日期
1932.12.09
申请人
COLONIAL BROACH COMPANY
发明人
HALBORG CARL J.
分类号
B23D43/00
主分类号
B23D43/00
代理机构
代理人
主权项
地址
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