Information display system

Details Information display system Information display system

1979-08-14

1982-05-25

Lucas, Susan J.

Recording, communication, or information retrieval equipment

Video or audio transmission, recording or playback equipment

Telephone equipment

D1402

Patent

active

D02645890

REFERENCES:
patent: D236986 (1975-09-01), Schierholz
patent: 3879722 (1975-04-01), Knowlton
patent: 4027958 (1977-06-01), Shigeta et al.
patent: 4038533 (1977-07-01), Dummermuth et al.

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