VIENNACCORD
television and radio adapters for people with hearing deficiencies; wireless transmission apparatus for hard of hearing schools, compprised of a microphone to convert sound waves into electrical signals, an amplifier, a transmitter to transmit said amplified signals by radio or infrared waves, and special hearing aids responsive to said transmitted signals, to help in the education of people with hearing impairments in special schools; software for hearing aids used to process and achieve dif...
Abandoned · February 13, 1995 · 74633644 ·