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发明名称
摘要
申请公布号
JPS56117914(U)
申请公布日期
1981.09.09
申请号
JP19800016189U
申请日期
1980.02.12
申请人
发明人
分类号
B21C1/30;B21B39/02;B21B39/08;B21C1/16;B21C1/34;B21C3/08;B21D3/02;B21D3/12;(IPC1-7):B21C1/30
主分类号
B21C1/30
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代理人
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