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发明名称
摘要
申请公布号
BE654618(A)
申请公布日期
1965.02.15
申请号
BED654618
申请日期
1964.10.21
申请人
发明人
分类号
B21C23/08;B21C23/21;B21C25/00
主分类号
B21C23/08
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