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The evolution of telephones

October 19th 2011 03:35

telephones history photography









Magnavox anti-noise desk set - 1920s

The Magnavox anti-noise desk set is an early example of noise-cancellation technology. The phone began to make gain popularity in the military in the 1920s.



Author: Chenda Ngak

Credit: Cyber Telephone Museum/Ron Christianson



CBS



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