workmen's protective face-shields; [protective goggles; protective masks; filters for respiratory masks; respirators for filtering air, other than for artificial respiration;] breathing apparatus, except for artificial respiration, in the nature of forced ventilated breathing hoods to be used in contaminated environment to provide cleaned air to the user; respirators, other than for artificial respiration [; respiratory masks, other than for artificial respiration, for non-medical purposes]

'air':18,47 'apparatus':25 'artifici':22,28,55,62 'breath':24,36 'clean':46 'contamin':42 'environ':43 'except':26 'face':5 'face-shield':4 'filter':11,17 'forc':34 'goggl':8 'hood':37 'mask':10,14,58 'medic':67 'natur':32 'non':66 'non-med':65 'protect':3,7,9 'provid':45 'purpos':68 'respir':15,23,29,51,56,63 'respiratori':13,57 'shield':6 'use':40 'user':50 'ventil':35 'workmen':1

VISION 2000

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