Electrical audio signal processing systems and devices – One-way audio signal program distribution – Public address system
Patent
1990-02-26
1992-09-08
Shaw, Dale M.
Electrical audio signal processing systems and devices
One-way audio signal program distribution
Public address system
434112, 434116, C10L 804
Patent
active
051465027
ABSTRACT:
A portable voice or speech aid enabling a deaf or voice impaired user to make sounds into a microphone to output intelligible speech through a built-in speaker or to a text display screen.
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Davis, Van Nortwick & Company
Doerrler Michelle
Shaw Dale M.
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