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摘要
申请公布号
GB553926(A)
申请公布日期
1943.06.10
申请号
GB19420001132
申请日期
1942.01.27
申请人
E.W. BLISS COMPANY
发明人
分类号
B21D22/10;B30B15/00
主分类号
B21D22/10
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