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发明名称
摘要
申请公布号
JPS5681000(U)
申请公布日期
1981.06.30
申请号
JP19790161899U
申请日期
1979.11.21
申请人
发明人
分类号
B21J15/28;B21J15/00;B21J15/16;B30B15/14;B30B15/26;(IPC1-7):B30B15/14
主分类号
B21J15/28
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代理人
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