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Mobile phone inventor made first call 50 years ago - BBC
50 years ago, he made the first cell phone call | CNN Business
The First Mobile Phone Call Was Made 75 Years Ago
Martin Cooper (inventor) - Wikipedia
50 years ago, the first cell phone call was made : NPR
Martin Cooper | Biography, Inventions, & Facts | Britannica
From ‘the Brick’ to the iPhone, the Cellphone Celebrates 50 Years
50 years ago, Martin Cooper made the first cellphone call
50 years ago, Martin Cooper made the first cellphone call
History of mobile phones - Wikipedia