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发明名称
摘要
申请公布号
JPS646992(Y2)
申请公布日期
1989.02.23
申请号
JP19840184524U
申请日期
1984.12.05
申请人
发明人
分类号
B21D7/06;B21D5/01;(IPC1-7):B21D7/06
主分类号
B21D7/06
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代理人
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