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发明名称
摘要
申请公布号
JPS5113461(Y2)
申请公布日期
1976.04.10
申请号
JP19720033136U
申请日期
1972.03.22
申请人
发明人
分类号
B21B39/00;B21D45/04;B21J17/00;B30B15/30;C21D1/00;C21D9/00;(IPC1-7):C21D1/00
主分类号
B21B39/00
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代理人
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地址
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