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Radio
Invented by Guglielmo Macoroni, Reginald Fessenden, Nikola Tesla and William Dubiler -
Television
Invented by Philo Farnsworth, Kenjiro Takayanagi, John Logie Baird and Charles Francis Jenkins -
Car Radio
Invented by Paul Galvin and Jim Fosgate -
Electric Guitar
Invented by Adolph Rickenbacker and George Beauchamp -
Jukebox
Louis Glass -
Computer Hard Disc
Reynold B Johnson -
Internal Pacemaker
Invented by Rune Elmqvist -
Email
Invented by Raymond Samuel Tomlinson -
Cell Phone
Invented by Martin Cooper, W Rae Young and Erik Tigerstedt -
Walkman
Invented by Nobutoshi Kihara -
Lava Lamp
Invented by Edward Craven Walker -
Nintendo Game Boy
Invented by Tim Berners-Lee and Robert Cailliau