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发明名称
摘要
申请公布号
JPS55154608(U)
申请公布日期
1980.11.07
申请号
JP19790051313U
申请日期
1979.04.19
申请人
发明人
分类号
B21C37/08;B21D5/01;B21D28/34;(IPC1-7):B21D5/01
主分类号
B21C37/08
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代理人
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