Combined shelf index and keyboard for a file retrieval system

Details Combined shelf index and keyboard for a file retrieval system Combined shelf index and keyboard for a file retrieval system

1980-07-11

1982-10-12

Feifer, Melvin B.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Telephone equipment

D1402

Patent

active

D02665158

REFERENCES:
patent: D230602 (1974-03-01), Kovacs et al.
patent: D236133 (1975-07-01), Kan er et al.
patent: D258956 (1981-04-01), Chadima, Jr.

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