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发明名称
摘要
申请公布号
JPS4931826(Y1)
申请公布日期
1974.08.28
申请号
JP19690107518U
申请日期
1969.11.14
申请人
发明人
分类号
B21J15/20;B21J15/00;B21J15/02;B21J15/16;B21J15/28;B21J15/30;(IPC1-7):B21J15/20
主分类号
B21J15/20
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代理人
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