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发明名称
摘要
申请公布号
JPH0730172(Y2)
申请公布日期
1995.07.12
申请号
JP19870070620U
申请日期
1987.05.12
申请人
发明人
分类号
B23G7/00;B21D19/02;B21D28/10;(IPC1-7):B21D19/02
主分类号
B23G7/00
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代理人
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