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发明名称
摘要
申请公布号
FR2208390(A6)
申请公布日期
1974.06.21
申请号
FR19720046921
申请日期
1972.12.29
申请人
BWG BERGWERK WALZWERK,DT
发明人
分类号
B21D1/05;B65H23/188;(IPC1-7):B65H23/00;B21C1/00;B21D1/00
主分类号
B21D1/05
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代理人
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