Data-indicating device

Details Data-indicating device Data-indicating device

1976-01-26

1977-05-31

Swisher, S. Clement

Card, picture, or sign exhibiting

Calendars

Rotatable

116133, G09D 308

Patent

active

040260518

ABSTRACT:
A data-indicating device having a multitude of data-carrying discs arranged in a casing wherein at least one of the discs has a transparent inner portion and an outer peripheral portion and the discs are arranged such that the data carried by the other discs shows through the transparent inner portion of the one and are viewable through apertures in the front cover of the casing. An embodiment as a perpetual calendar is disclosed.

REFERENCES:
patent: 2022632 (1935-11-01), Woodford

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