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发明名称
摘要
申请公布号
JPS5744633(U)
申请公布日期
1982.03.11
申请号
JP19800116082U
申请日期
1980.08.18
申请人
发明人
分类号
B21D24/00;B21D22/20;B21D22/22;B21D24/04;B21D24/06;(IPC1-7):B21D22/20
主分类号
B21D24/00
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代理人
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