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发明名称
摘要
申请公布号
JPS56142841(U)
申请公布日期
1981.10.28
申请号
JP19800041772U
申请日期
1980.03.28
申请人
发明人
分类号
B21J13/03;(IPC1-7):B21J13/03
主分类号
B21J13/03
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代理人
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