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发明名称
Couvercle obturateur à fermeture automatique pour conduits d'aération et sorties de secours d'abris, plus spécialement souterrains
摘要
申请公布号
FR1310839(A)
申请公布日期
1962.11.30
申请号
FR19610881138
申请日期
1961.12.06
申请人
BOCHUMER EISENHUETTE HEINTZMANN & CO.
发明人
分类号
E06B5/10;F16K17/00
主分类号
E06B5/10
代理机构
代理人
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地址
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