electric advertising

The electric advertising board has three-sided vertical panels, endlessly rotating to show repeating ads.

Oscar J. Gude, often credited with introducing the first electric advertising signs in New York, moved from an apartment building on 55th Street near Broadway.

All day long, passersby in a downtown Belfast square watched as the names of all 3,173 victims of 25 years of sectarian warfare flashed on a large electric advertising billboard overlooking Shaftesbury Square.

The array of illuminated billboards that have dominated the Manhattan crossroads for decades have been joined by two gigantic electric advertising signs, for the South Korean conglomerate Samsung and the Japanese whisky Suntory.

Hammer invented the electric advertising sign, by constructing a ten foot long, four foot high sign with 12 bulbs for each letter of the name "Edison," which had a rotating drum switch to light the letters one by one and then all at once.