Keyboard for information storage and retrieval

Recording – communication – or information retrieval equipment – Video or audio transmission – recording or playback equipment – Telephone equipment

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D03184633

REFERENCES:
patent: D202554 (1965-10-01), Meunier
patent: D202555 (1965-10-01), Meunier
patent: D291195 (1987-08-01), Shea
patent: D295761 (1988-05-01), Nishibori et al.
patent: D297946 (1988-10-01), Kuo
patent: D311385 (1990-10-01), Arkin

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