Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment
Patent
1988-07-21
1990-06-19
Lucas, Susan J.
Recording, communication, or information retrieval equipment
Video or audio transmission, recording or playback equipment
Telephone equipment
Patent
active
D03086682
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Popular Science-Mar. 1984, p. 162-Human Engineering Keyboard bottom right of page.
"Dialogos--An Aid for the Deaf-Blind," The Finnish Central Association of the Visually Handicapped, Oct. 21, 1984.
"Piezoelectric Braille Module," J. V. Pike-IBM Technical Disclosure Bulletin, vol. 19, No. 4, Sep. 1976.
Briscoe Robert J.
Claridge Andrew M.
British Telecommunications public limited company
Lucas Susan J.
Nunn Freda S.
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