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摘要
申请公布号
CS176979(B1)
申请公布日期
1977.07.29
申请号
CS19750009079
申请日期
1975.12.31
申请人
发明人
分类号
F24F7/00;(IPC1-7):F24F7/00
主分类号
F24F7/00
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