long range communication apparatus in the nature of loudspeakers for use in highly-directional communication, high output electro-acoustical devices and systems, namely, audio speaker, audio amplifiers and loudspeaker for use in highly directional communications

'acoust':21 'amplifi':29 'apparatus':4 'audio':26,28 'communic':3,16,37 'devic':22 'direct':15,36 'electro':20 'electro-acoust':19 'high':14,17,35 'highly-direct':13 'long':1 'loudspeak':9,31 'name':25 'natur':7 'output':18 'rang':2 'speaker':27 'system':24 'use':11,33

LRAD-RX

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