Today In 1923, Garrett Morgan Patented The Traffic Signal. Here’s How Much He Sold The Rights To GE For

0 Posted by - November 14, 2018 - LATEST POSTS

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  • Mark Pope March 8, 2018 - 3:12 pm Reply

    patent 1,475,074 seens to be for a rotating brush invented by soneone else. what us the correct patent number?

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