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发明名称
摘要
申请公布号
JPS646969(Y2)
申请公布日期
1989.02.23
申请号
JP19820104129U
申请日期
1982.07.09
申请人
发明人
分类号
B21C25/02;(IPC1-7):B21C25/02
主分类号
B21C25/02
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代理人
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