Electric ceiling fans; Electric cooling fans; Electric fans for personal use; Electric fans for ventilation; Electrical fans being parts of household ventilation installations; Electrically powered fans for ventilation purposes; Extractor fans; Fans for exhaust extractors; Fans for fume extractors; Fans for gas extractors; Fans for ventilating; Motorised fans for ventilation; Propellers (fans) for ventilation apparatus; Room air fans; Room fans; Table fans; Ventilating fans; Ventilation grilles being parts of extractor fans; Apparatus for exhausting dust (ventilation); Apparatus for exhausting fumes (ventilation); Apparatus for exhausting gases (ventilation); Apparatus for exhausting mists (ventilation); Apparatus for exhausting particles (ventilation); Apparatus for extracting dust (ventilation); Apparatus for extracting fumes (ventilation); Apparatus for extracting gases (ventilation); Apparatus for extracting mists (ventilation); Apparatus for extracting particles (ventilation); Dust extraction installations (ventilation); Dust removing installations for ventilation; Extractor units (ventilation); Extractors (ventilation or air conditioning); Industrial ventilation apparatus; Ventilation apparatus