passive or powered and portable or fixed air filters for residential, commercial and industrial heating, ventilation and air conditioning applications; and heating, ventilation and air conditioning equipment, namely, fans, boilers, furnaces, air conditioners and humidifiers

'air':8,18,25,32 'applic':20 'boiler':30 'commerci':12 'condit':19,26 'condition':33 'equip':27 'fan':29 'filter':9 'fix':7 'furnac':31 'heat':15,22 'humidifi':35 'industri':14 'name':28 'passiv':1 'portabl':5 'power':3 'residenti':11 'ventil':16,23

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