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发明名称
摘要
申请公布号
NL7212881(A)
申请公布日期
1973.03.26
申请号
NL19720012881
申请日期
1972.09.22
申请人
发明人
分类号
B21B15/00;B21B37/16;B21B37/26;B65H26/00;H02P5/46;H02P29/00;(IPC1-7):B21B37/12
主分类号
B21B15/00
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代理人
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