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发明名称
摘要
申请公布号
JPS5311102(B2)
申请公布日期
1978.04.19
申请号
JP19740055763
申请日期
1974.05.17
申请人
发明人
分类号
B23D15/04;B21F13/00;B21K27/06;B23D15/12
主分类号
B23D15/04
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