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发明名称
摘要
申请公布号
SU405643(A1)
申请公布日期
1973.11.05
申请号
SU19721766064
申请日期
1972.03.28
申请人
发明人
分类号
B21J15/12;B21J15/32;(IPC1-7):B21J15/12
主分类号
B21J15/12
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代理人
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