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发明名称
Method for producing sharp corners in metal stock
摘要
申请公布号
US2023638(A)
申请公布日期
1935.12.10
申请号
US19320592900
申请日期
1932.02.15
申请人
DAHLSTROM METALLIC DOOR COMPANY
发明人
LAWSON GUST
分类号
B21D5/02
主分类号
B21D5/02
代理机构
代理人
主权项
地址
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