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发明名称
摘要
申请公布号
BE679299(A)
申请公布日期
1966.09.16
申请号
BED679299
申请日期
1966.04.08
申请人
发明人
分类号
B21B45/02;B22D30/00;C21D1/63
主分类号
B21B45/02
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代理人
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