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发明名称
摘要
申请公布号
JPS5610970(B2)
申请公布日期
1981.03.11
申请号
JP19740040962
申请日期
1974.04.15
申请人
发明人
分类号
B21B3/00;C21D8/02;C21D9/48;C22C38/00;C22C38/04
主分类号
B21B3/00
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