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发明名称
摘要
申请公布号
JPS5488140(U)
申请公布日期
1979.06.22
申请号
JP19770160968U
申请日期
1977.12.02
申请人
发明人
分类号
B21D37/04;B21D37/14;B30B15/02;(IPC1-7):B21D37/14
主分类号
B21D37/04
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代理人
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