Non-electric airflow regulators to provide steady airflow in residential and commercial building; fire and smoke dampers for ventilating conduits; mechanical ventilation systems providing exhaust and air supply ventilation for residential and commercial buildings; air filtration units, namely, dust exhausters, dust collectors and parts of fittings therefor

'air':28,36 'airflow':4,9 'build':14,35 'collector':43 'commerci':13,34 'conduit':21 'damper':18 'dust':40,42 'electr':3 'exhaust':26,41 'filtrat':37 'fire':15 'fit':47 'mechan':22 'name':39 'non':2 'non-electr':1 'part':45 'provid':7,25 'regul':5 'residenti':11,32 'smoke':17 'steadi':8 'suppli':29 'system':24 'therefor':48 'unit':38 'ventil':20,23,30

Centralized and built-in vacuum cleaners for permanent installation in residential and commercial buildings, and parts, accessories and fittings therefor

'accessori':18 'build':15 'built':4 'built-in':3 'central':1 'cleaner':7 'commerci':14 'fit':20 'instal':10 'part':17 'perman':9 'residenti':12 'therefor':21 'vacuum':6

ALDES

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