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发明名称
摘要
申请公布号
JPS5459035(U)
申请公布日期
1979.04.24
申请号
JP19770132120U
申请日期
1977.10.01
申请人
发明人
分类号
B21B45/02;C21D1/00;(IPC1-7):B21B45/02
主分类号
B21B45/02
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代理人
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