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发明名称
摘要
申请公布号
LU62802(A1)
申请公布日期
1971.08.23
申请号
LUD62802
申请日期
1971.03.17
申请人
发明人
分类号
B22C1/02;B22C1/18
主分类号
B22C1/02
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代理人
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地址
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