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发明名称
摘要
申请公布号
JPS57185440(U)
申请公布日期
1982.11.25
申请号
JP19810071834U
申请日期
1981.05.20
申请人
发明人
分类号
B21D26/033;B21D26/045;(IPC1-7):B21D26/02
主分类号
B21D26/033
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代理人
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