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发明名称
摘要
申请公布号
JPS5419316(Y2)
申请公布日期
1979.07.17
申请号
JP19740094614U
申请日期
1974.08.09
申请人
发明人
分类号
B21C23/12;B21C23/08;B21C23/21;B21C25/08;B21C37/16;B29B7/00;B29C47/00;B29C47/54;B29C47/92;B30B11/30;(IPC1-7):B21C23/08;B29D23/04
主分类号
B21C23/12
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代理人
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