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发明名称
Device for increasing the draught in chimneys and ventilation shafts
摘要
申请公布号
GB838855(A)
申请公布日期
1960.06.22
申请号
GB19580013161
申请日期
1958.04.25
申请人
RUDOLF FRIMBERGER
发明人
分类号
A45D29/04;F23L17/02
主分类号
A45D29/04
代理机构
代理人
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