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发明名称
Perfectionnements apportés aux échangeurs de température
摘要
申请公布号
FR699357(A)
申请公布日期
1931.02.13
申请号
FRD699357
申请日期
1930.07.25
申请人
SOCIETE ANONYME DES ANCIENS ETABLISSEMENTS LEON LAISNE
发明人
分类号
F28D1/053
主分类号
F28D1/053
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