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发明名称
摘要
申请公布号
JPS566513(U)
申请公布日期
1981.01.21
申请号
JP19790088244U
申请日期
1979.06.29
申请人
发明人
分类号
B21D37/00;B21D5/01;(IPC1-7):B21D5/01
主分类号
B21D37/00
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代理人
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