Electronic calendar system

Card – picture – or sign exhibiting – Calendars

Patent

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Details

58 4A, G09D 300, G04B 1924

Patent

active

039758460

ABSTRACT:
Methods and circuitry by which standard solid state, incadescent, or chemical alpha or numeric displays may be excited in proper sequence either from an A.M. or P.M. indicator, or any other electronic pulse, whether initially derived from an electrical or mechanical source, that appears one or more times during a 24 hour period.

REFERENCES:
patent: 3738099 (1973-06-01), Tanaka
patent: 3796037 (1974-03-01), Fujita
patent: 3797222 (1974-03-01), Kato

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