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Invention of radio - Wikipedia
The transistor: 75 years since the famed Nokia Bell Labs invention changed the world - Nokia Bell Labs
Who Invented the Transistor Radio? Discover the Origins
The transistor radio was invented in 1947. It allowed people to carry radios with them.
Old portable radios were marvels of technology from the 1950s to the 1980s - Click Americana
Dec. 23, 1947: Transistor Opens Door to Digital Future
The Transistor Radio Nuts & Volts Magazine
THE LITTLE DEVICE THAT CHANGED EVERYTHING -- THE TRANSISTOR
Who invented the transistor radio? - Quora
Transistor - Wikipedia
Dec. 23, 1947: Transistor Opens Door to Digital Future
Vintage Transistor Radios of the 1950s and 60s
The History of Motorola - MRA
Restoring the World's First Transistor Radio
Transistor Radio: Guide on How To Build A Transistor Radio Circuit For Amateurs