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发明名称
摘要
申请公布号
JPS5720122(B2)
申请公布日期
1982.04.27
申请号
JP19740111787
申请日期
1974.09.30
申请人
发明人
分类号
B21D43/10;B27D3/00;B27D3/02;B27N3/22
主分类号
B21D43/10
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代理人
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