Thomas Edison's Electric Pen Invention | The Henry Ford’s Innovation Nation

Описание к видео Thomas Edison's Electric Pen Invention | The Henry Ford’s Innovation Nation

Thomas Edison's electric pen, an ancestor of both the mimeograph and the tattoo needle, was a successful product in the mid-1870s. Users would write normally with the pen, which, instead of a nib, had a needle powered by an electric motor. The needle poked holes into a stencil, which was then used to copy the document. Many businesses found document duplication an attractive possibility. Season 4 Episode 84.

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