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发明名称
Method of and apparatus for treating sheet metal
摘要
申请公布号
US2060400(A)
申请公布日期
1936.11.10
申请号
US19320644971
申请日期
1932.11.30
申请人
BETHLEHEM STEEL COMPANY
发明人
NIEMAN HENRY W.
分类号
B21D1/00;B21D1/02;C21D7/02
主分类号
B21D1/00
代理机构
代理人
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地址
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