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发明名称
摘要
申请公布号
JPS5026510(B2)
申请公布日期
1975.09.01
申请号
JP19710069131
申请日期
1971.09.06
申请人
发明人
分类号
B21D3/10;B30B15/16;B30B15/22;B30B15/26;(IPC1-7):B21D3/10
主分类号
B21D3/10
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