when was the first handheld cell phone invented（関連順）

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#OnThisDay 1973 The first handheld mobile telephone call was made by an employee of Motorola

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Martin Cooper First Handheld Cellphone - with Don Bishop

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How Martin Cooper invented the first handheld Mobile Phone | Dunya ke pehla Mobile ki kahani |who???

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First Handheld Mobile Call (Apr. 3, 1973) #motorola #first #call #at&t #belllabs #history

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