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发明名称
摘要
申请公布号
JPS5524362(B2)
申请公布日期
1980.06.28
申请号
JP19750137317
申请日期
1975.11.17
申请人
发明人
分类号
B21D24/04;B21D24/08
主分类号
B21D24/04
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