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Sony – First company to make entire transistor radios in-house

Sony, the Japan electronics giant, was the first company to make transistor radios with all components being made in-house. The TR-55 had 5 transistors and printed circuit boards.

Sony, the Japan electronics giant, was the first company to make transistor radios with all components being made in-house. The TR-55 had 5 transistors and printed circuit boards.

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