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发明名称
摘要
申请公布号
BE735000(A)
申请公布日期
1969.12.01
申请号
BED735000
申请日期
1969.06.23
申请人
发明人
分类号
B21F27/10;B23D31/00;B23K11/00;B23K11/10;B28B23/02
主分类号
B21F27/10
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代理人
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