Inventor Chester Carlson created the first Xerox image.
He printed “10.-22.-38 ASTORIA” on a glass microscope slide.
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Daniel Halladay patented the self-governing windmill.
Mary Kies became the first woman ever to acquire a patent.
Scotsman John Logie Baird demonstrated the color television transmission in London for the first time.
The clip-on tie was designed.
A polygraph test was conducted by its inventor, Leonarde Keeler, for the first time.
