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发明名称
摘要
申请公布号
BE733992(A)
申请公布日期
1969.11.17
申请号
BED733992
申请日期
1969.06.03
申请人
发明人
分类号
F28D7/16;F28D7/00;F28F9/013;F28F21/06
主分类号
F28D7/16
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代理人
主权项
地址
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