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发明名称
摘要
申请公布号
JPS49117585(U)
申请公布日期
1974.10.08
申请号
JP19730014670U
申请日期
1973.02.02
申请人
发明人
分类号
B21D28/00;B21D28/02;B23D79/00;B26F1/00;(IPC1-7):B26F1/00
主分类号
B21D28/00
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