Graphic displays employing electroluminescent panels

Card – picture – or sign exhibiting – Illuminated sign – Luminescent

Patent

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Details

401522, 40367, G09F 1322

Patent

active

041954319

ABSTRACT:
A booklike article such as a menu, opera score, sports program, theatre program comprises a first relatively transparent layer having impressed thereon indicia representative of graphic data associated with the typical article. Underlying the transparent layer is an electroluminescent panel which upon application of a suitable operating potential, will emit radiation in the light spectrum, thus enabling the grahic data to be viewed in dark environments. A source of potential is located in the spine of the book. The source is battery operated and supplies an output for energizing the panel.

REFERENCES:
patent: 1380895 (1921-06-01), Gilman
patent: 2294444 (1942-09-01), Boroughs
patent: 2487403 (1949-11-01), Wisdom
patent: 2543670 (1951-02-01), Regensburg
patent: 2716298 (1955-08-01), Spielmann
patent: 2826844 (1958-03-01), Leika
patent: 3680237 (1972-08-01), Finnerty
patent: 4105319 (1978-08-01), Wells et al.

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