Proprietary hearing device systems for enhancing the characteristics of sound comprised of personal hearing devices in the nature of non-medical assistive listening devices and also including any combination of the following accessories specially adapted for use in the hearing device systems, namely, batteries, receiver links, battery packs, battery chargers, computer hardware and software for adjusting parameters and settings of personal hearing devices, and hardware and software for programming personal hearing devices

'accessori':34 'adapt':36 'adjust':57 'also':27 'assist':23 'batteri':45,48,50 'characterist':8 'charger':51 'combin':30 'compris':11 'comput':52 'devic':3,15,25,42,64,73 'enhanc':6 'follow':33 'hardwar':53,66 'hear':2,14,41,63,72 'includ':28 'link':47 'listen':24 'medic':22 'name':44 'natur':18 'non':21 'non-med':20 'pack':49 'paramet':58 'person':13,62,71 'program':70 'proprietari':1 'receiv':46 'set':60 'softwar':55,68 'sound':10 'special':35 'system':4,43 'use':38

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