By 1887, Edison was recognized for having set up the world's first full fledged research and development center in West Orange, New Jersey. An amazing enterprise, its significance is as much misunderstood as his work in developing the first practical centralized power system. Regardless, within a year, this fantastic operation was the largest scientific testing laboratory in the world.
In 1890, Edison immersed himself in developing the first Vitascope, which would lead to the first silent motion pictures.
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And, by 1892, his Edison General Electric Co. had fully merged with another firm to become the great General Electric Corporation, in which he was a major stockholder.
At the turn-of-the-century, Edison invented the first practical dictaphone, mimeograph, and storage battery. After creating the "kinetiscope" and the first silent film in 1904, he went on to introduce The Great Train Robbery in 1903 , which was a ten minute clip that was his first attempt to blend audio with silent moving images to produce "talking pictures."