Wireless group auditory trainers, namely, auditory headset devices used to improve instruction for students with normal hearing, hearing impairment, and other disabilities

'auditori':3,6 'devic':8 'disabl':22 'group':2 'headset':7 'hear':17,18 'impair':19 'improv':11 'instruct':12 'name':5 'normal':16 'student':14 'trainer':4 'use':9 'wireless':1

Wireless group amplification systems comprised primarily of wireless amplifiers, transmitters and speakers to improve acoustics and hearing and to amplify and clarify voices in the classroom

'acoust':15 'amplif':3 'amplifi':9,20 'clarifi':22 'classroom':26 'compris':5 'group':2 'hear':17 'improv':14 'primarili':6 'speaker':12 'system':4 'transmitt':10 'voic':23 'wireless':1,8

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