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发明名称
摘要
申请公布号
LU64515(A1)
申请公布日期
1972.06.20
申请号
LUD64515
申请日期
1971.12.23
申请人
发明人
分类号
B21C47/14;B21C47/26;C21D9/56;C21D9/573
主分类号
B21C47/14
代理机构
代理人
主权项
地址
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