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发明名称
摘要
申请公布号
BE689704(A)
申请公布日期
1967.05.16
申请号
BED689704
申请日期
1966.11.14
申请人
发明人
分类号
B21B3/00;B21B27/06;C22F1/16
主分类号
B21B3/00
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代理人
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地址
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