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发明名称
摘要
申请公布号
JPS533940(U)
申请公布日期
1978.01.14
申请号
JP19760085355U
申请日期
1976.06.28
申请人
发明人
分类号
B21D39/10;B21D39/18;(IPC1-7):B21D39/18
主分类号
B21D39/10
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代理人
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