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发明名称
摘要
申请公布号
NL7402667(A)
申请公布日期
1974.08.29
申请号
NL19740002667
申请日期
1974.02.27
申请人
发明人
分类号
B21D5/01;B21D37/04;B30B1/32;B30B1/34;B30B15/00;B30B15/04;(IPC1-7):B30B1/34
主分类号
B21D5/01
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代理人
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地址
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