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发明名称
摘要
申请公布号
NL6907567(A)
申请公布日期
1969.11.27
申请号
NL19690007567
申请日期
1969.05.16
申请人
发明人
分类号
C22C27/00;F28D15/04;(IPC1-7):F28D15/00
主分类号
C22C27/00
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