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发明名称
échangeur de chaleur
摘要
申请公布号
FR927739(A)
申请公布日期
1947.11.07
申请号
FRD927739
申请日期
1946.06.07
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
分类号
F28D9/00
主分类号
F28D9/00
代理机构
代理人
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地址
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