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发明名称
摘要
申请公布号
SU531620(A1)
申请公布日期
1976.10.15
申请号
SU19752138732
申请日期
1975.05.26
申请人
发明人
分类号
B22C1/02;B22C1/14;B22C9/10;(IPC1-7):B22C1/02
主分类号
B22C1/02
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代理人
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