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发明名称
économiseur pour la récupération de la chaleur des gaz de cheminées
摘要
申请公布号
FR854773(A)
申请公布日期
1940.04.24
申请号
FRD854773
申请日期
1939.05.16
申请人
发明人
GRIGORY KAGAN
分类号
主分类号
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