3 abr 1973 año - First Cell phone was invented (Cinta de tiempo)
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PPT - Cell Phones Past to Present PowerPoint Presentation, free download - ID:5973545
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A 30-Second Evolution of Cell Phones (1973-2017) - YouTube
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April 3, 1973: First Cell Phone Call : Day in Tech History
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Motorola DynaTAC - Wikipedia
Original Models: A Look at Iconic Tech Prototypes | Motorola dynatac, Phone, Cell phone
Mobile phones through the years as staple electronic celebrates 50th birthday - Daily Record
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The Evolution Of Mobile Phones 1973 To 2020 - YouTube
