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发明名称
摘要
申请公布号
JPS577602(U)
申请公布日期
1982.01.14
申请号
JP19800080420U
申请日期
1980.06.11
申请人
发明人
分类号
B21B31/02;B21B13/08;B21B13/14;(IPC1-7):B21B13/08
主分类号
B21B31/02
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代理人
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