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发明名称
摘要
申请公布号
JPS5896815(U)
申请公布日期
1983.07.01
申请号
JP19810194693U
申请日期
1981.12.25
申请人
发明人
分类号
B21D41/02;B21D19/02;B21D19/04;(IPC1-7):B21D19/02
主分类号
B21D41/02
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代理人
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