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经营范围
发明名称
échangeurs de chaleur
摘要
申请公布号
FR845144(A)
申请公布日期
1939.08.11
申请号
FRD845144
申请日期
1938.10.24
申请人
发明人
BECK STEFAN
分类号
F28D1/053
主分类号
F28D1/053
代理机构
代理人
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