发明名称 Production of ventilation cloisters by fixing a ventilation grill on a concrete frame by the installation of fasteners for sanitary and roofing spaces of houses and buildings
摘要 Production of ventilation cloisters consists of fixing a ventilation grill on a concrete frame by the installation of fasteners.
申请公布号 FR2850375(A1) 申请公布日期 2004.07.30
申请号 FR20030000053 申请日期 2003.01.28
申请人 LEVEQUE NADEJDA GOURIANOVA 发明人 LEVEQUE NADEJDA GOURIANOVA
分类号 B28B23/00;(IPC1-7):E06B9/01 主分类号 B28B23/00
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