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  2. On April 3, 1973, Cooper introduced the DynaTAC phone at a press conference in New York City. To make sure that it worked before the press conference, he placed the first public cell phone call, to engineer Joel Engel, head of AT&T’s rival project, and gloated that he was calling from a portable cellular phone.
    www.britannica.com/biography/Martin-Cooper
    Engineer Martin Cooper made the world's first cellphone call on April 3, 1973, using a Motorola DynaTAC.
    www.smithsonianmag.com/innovation/from-the-bric…
    Cooper had convinced Motorola, a small telecommunications company at the time, to support his idea. Three months later, Cooper and a team of engineers had created a phone nicknamed “The Brick.” It was huge, chunky, and weighed about two pounds. He proved the phone worked on April 3, 1973.
    whyy.org/segments/father-of-cell-phone-reflects-o…
    The commercial version of Marty Cooper's prototype, the Motorola Dynatac 8000X, was released 11 years after that first call, in 1984.
    www.bbc.com/news/technology-65112048
    Motorola spent three months building a prototype for a portable, mobile handset that Cooper publicly demonstrated in April of 1973. The company's first commercial cellular phone, the "DynaTAC," went on sale 10 years later.
    www.cnn.com/2010/TECH/mobile/07/09/cooper.cel…
     
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  5. WEBEngineer Martin Cooper made the world's first cellphone call on April 3, 1973, using a Motorola DynaTAC. Valerie Macon / AFP via Getty Images

  6. WEBMartin Cooper — aka the father of the cellphone, and former head of Motorola's communications systems division — and the first person to ever make a call from a cellphone. What's the big deal?

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    WEBOn 3 April 1973, Marty Cooper stood on a corner of Sixth Avenue in New York and took a phone book from his pocket. He then punched a number into a large, cream-coloured device and put it to his...

  8. WEBFifty years ago, Martin Cooper, an engineer for Motorola, stood nervously along 6th Avenue in New York City, about to do something that had never been done before. He reached into his pocket for a little telephone book …

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