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发明名称
摘要
申请公布号
JPS6215813(U)
申请公布日期
1987.01.30
申请号
JP19850104818U
申请日期
1985.07.11
申请人
发明人
分类号
B21B39/14;B21C47/34;(IPC1-7):B21C47/34
主分类号
B21B39/14
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