Air filters for commercial air cleaners used in clean rooms; air filters for industrial installations, namely, for use in clean rooms

'air':1,5,11 'clean':9,20 'cleaner':6 'commerci':4 'filter':2,12 'industri':14 'instal':15 'name':16 'room':10,21 'use':7,18

Air-permeable polytetrafluoroethylene (PTFE) laminated to a woven fabric or felt substrate, for use in the manufacture of air filters; porous polytetrafluoroethylene (PTFE) membrane laminated to woven cloth or felt backing, for use in the manufacture of air filters

'air':2,20,39 'air-perm':1 'back':32 'cloth':29 'fabric':10 'felt':12,31 'filter':21,40 'lamin':6,26 'manufactur':18,37 'membran':25 'permeabl':3 'polytetrafluoroethylen':4,23 'porous':22 'ptfe':5,24 'substrat':13 'use':15,34 'woven':9,28

Air filters for semiconductor manufacturing equipment; air filters for home-use vacuum cleaners; air filters for commercial-use vacuum cleaners

'air':1,7,15 'cleaner':14,22 'commerci':19 'commercial-us':18 'equip':6 'filter':2,8,16 'home':11 'home-us':10 'manufactur':5 'semiconductor':4 'use':12,20 'vacuum':13,21

Air filters for medical ventilation systems in medical facilities, namely, operating rooms, and sterile environments

'air':1 'environ':15 'facil':9 'filter':2 'medic':4,8 'name':10 'oper':11 'room':12 'steril':14 'system':6 'ventil':5

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