Headphones; Headsets for mobile telephones; Headsets for use with computers; Loudspeakers; Music headphones; Noise cancelling headphones; Personal headphones for sound transmitting apparatuses; Personal headphones for use with sound transmitting systems; Portable vibration speakers; Wireless headsets for smartphones; Wireless speakers

'apparatus':22 'cancel':15 'comput':10 'headphon':1,13,16,18,24 'headset':2,6,35 'loudspeak':11 'mobil':4 'music':12 'nois':14 'person':17,23 'portabl':31 'smartphon':37 'sound':20,28 'speaker':33,39 'system':30 'telephon':5 'transmit':21,29 'use':8,26 'vibrat':32 'wireless':34,38

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