Public-address systems consisting of audio amplifiers, audio mixers, audio speakers, audio receivers, audio transmitters, audio equalizers, and microphones, used as a peripheral device to and in conjunction with electronic whiteboards, for use by educational institutions in classrooms

'address':3 'amplifi':8 'audio':7,9,11,13,15,17 'classroom':39 'conjunct':29 'consist':5 'devic':25 'educ':36 'electron':31 'equal':18 'institut':37 'microphon':20 'mixer':10 'peripher':24 'public':2 'public-address':1 'receiv':14 'speaker':12 'system':4 'transmitt':16 'use':21,34 'whiteboard':32

AUDIOGEAR

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