Filters for air conditioning; Filters and filtering devices for air and gas conditioning; Fibrous filtering media for general industrial use in the purification of air and industrial fluids; Air filters for industrial installations; Air filters for HVAC units; Air filters for industrial use; Air filtering units; Air purification units; Air purifying units; Air purifying units for industrial use

'air':3,10,25,29,34,39,44,47,50,53 'condit':4,13 'devic':8 'fibrous':14 'filter':1,5,7,15,30,35,40,45 'fluid':28 'gas':12 'general':18 'hvac':37 'industri':19,27,32,42,57 'instal':33 'media':16 'purif':23,48 'purifi':51,54 'unit':38,46,49,52,55 'use':20,43,58

Air filters for mechanical purposes; Filters and purifiers for machines, namely, filters and purifiers for removing contaminants from gases used in the semiconductor industry

'air':1 'contamin':17 'filter':2,6,12 'gase':19 'industri':24 'machin':10 'mechan':4 'name':11 'purifi':8,14 'purpos':5 'remov':16 'semiconductor':23 'use':20

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