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发明名称
Perfectionnements aux conduits de fumée pour le chauffage au gaz et au mazout
摘要
申请公布号
FR1513782(A)
申请公布日期
1968.02.16
申请号
FR19676948364
申请日期
1967.03.03
申请人
发明人
HORGNE JEAN
分类号
E04F17/02;F23L17/02
主分类号
E04F17/02
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