Advertising Device.
Description:
Patent for an advertising machine that is motor-operated and will display a succession of slides that can be shown during the day or at night. It includes a light to help show slides to the public, a shutter that automatically and intermittently displays slides, a lens for projecting slides on a distant screen, and a master slide to be shown with each slide. The patent includes illustrations.
Date:
August 5, 1913
Creator:
Bernard, Oscar C.
Item Type:
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Partner:
UNT Libraries Government Documents Department