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发明名称
摘要
申请公布号
BE653291(A)
申请公布日期
1965.01.18
申请号
BED653291
申请日期
1964.09.18
申请人
发明人
分类号
B21C9/00;B21C9/02;B21C23/32;C25D9/02;C25D13/04
主分类号
B21C9/00
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代理人
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