chemical and biological preparations in the nature of filtering materials, namely, biological materials in the form of mussel, oyster, and clam shells, for odor control of sewage treatment plants and industrial plants

'biolog':3,12 'chemic':1 'clam':21 'control':25 'filter':9 'form':16 'industri':31 'materi':10,13 'mussel':18 'name':11 'natur':7 'odor':24 'oyster':19 'plant':29,32 'prepar':4 'sewag':27 'shell':22 'treatment':28

air purifying apparatus and machines; air purifying units for waste treatment use; Filters and filtering devices for air and gas conditioning; regulating accessories for gas pipes and lines; gas scrubbers

'accessori':23 'air':1,6,18 'apparatus':3 'condit':21 'devic':16 'filter':13,15 'gas':20,25,29 'line':28 'machin':5 'pipe':26 'purifi':2,7 'regul':22 'scrubber':30 'treatment':11 'unit':8 'use':12 'wast':10

MÓNASHELL

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