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Hard of hearing glasses/bank card/audio signal headset acoustic transmission mechanism having electrical conductors with magnetic properties mumetal/strong permeability alloy formed and isolating substrate deposited.
Hard of hearing glasses/bank card/audio signal headset acoustic transmission mechanism having electrical conductors with magnetic properties mumetal/strong permeability alloy formed and isolating substrate deposited.
The acoustic transmission mechanism has electrical conductor tracks in a material which is electrically conducting and magnetic, formed from mumetal or an alloy with a strong permeability. The conductors are deposited on an isolating substrate.
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