Medical devices, namely, directed audio speakers having control circuitry for amplifying and modulating ultrasonic frequencies for indirectly generating audible sound, all for use by individuals with hearing loss; medical devices, namely, audio systems comprised of audio speakers and amplifiers that improve audio clarity and speech intelligibility

'amplifi':11,39 'audibl':19 'audio':5,32,36,42 'circuitri':9 'clariti':43 'compris':34 'control':8 'devic':2,30 'direct':4 'frequenc':15 'generat':18 'hear':27 'improv':41 'indirect':17 'individu':25 'intellig':46 'loss':28 'medic':1,29 'modul':13 'name':3,31 'sound':20 'speaker':6,37 'speech':45 'system':33 'ultrason':14 'use':23

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