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经营范围
发明名称
Perfectionnements aux ailettes des échangeurs thermiques
摘要
申请公布号
FR716972(A)
申请公布日期
1931.12.30
申请号
FRD716972
申请日期
1931.05.12
申请人
发明人
FLEURY RAYMOND DE
分类号
F28F1/14;F28F1/34
主分类号
F28F1/14
代理机构
代理人
主权项
地址
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