Electro-acoustic devices and their parts, namely, loudspeakers; loudspeaker systems primarily consisting of audio speakers; head-phones; headsets for use with computers; headsets for use with telephones and cell phones; headsets for use with portable audio players; microphones; diaphragms in the nature of acoustic membranes for speakers, microphones and electro-acoustic devices; portable digital audio players for playing music; sound or image recording apparatus; sound or image reproduction apparatus

'acoust':3,46,54 'apparatus':67,72 'audio':15,38,58 'cell':31 'comput':24 'consist':13 'devic':4,55 'diaphragm':41 'digit':57 'electro':2,53 'electro-acoust':1,52 'head':18 'head-phon':17 'headset':20,25,33 'imag':65,70 'loudspeak':9,10 'membran':47 'microphon':40,50 'music':62 'name':8 'natur':44 'part':7 'phone':19,32 'play':61 'player':39,59 'portabl':37,56 'primarili':12 'record':66 'reproduct':71 'sound':63,68 'speaker':16,49 'system':11 'telephon':29 'use':22,27,35

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