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发明名称
摘要
申请公布号
NL6908305(A)
申请公布日期
1969.12.08
申请号
NL19690008305
申请日期
1969.05.30
申请人
发明人
分类号
F28D7/16;F28D7/00;F28F9/013;F28F21/06;(IPC1-7):F28D7/00;F28F1/00
主分类号
F28D7/16
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