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发明名称
摘要
申请公布号
JPS5313338(B2)
申请公布日期
1978.05.09
申请号
JP19740023382
申请日期
1974.03.01
申请人
发明人
分类号
B21B37/18
主分类号
B21B37/18
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代理人
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