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申请公布号
JPS5528798(B2)
申请公布日期
1980.07.30
申请号
JP19770122398
申请日期
1977.10.14
申请人
发明人
分类号
B21D15/10;B21D15/04;B30B1/32;B30B15/00;B30B15/04
主分类号
B21D15/10
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