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发明名称
摘要
申请公布号
JPS563073(Y2)
申请公布日期
1981.01.23
申请号
JP19730079479U
申请日期
1973.07.04
申请人
发明人
分类号
B21D53/78;B21B1/08;B21H7/16;(IPC1-7):B21H7/16
主分类号
B21D53/78
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代理人
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