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In 1954, the Industrial Development Engineering Associates company began selling the Regency TR-1, the world’s first commercial transistor radio.

In 1954, the Industrial Development Engineering Associates company began selling the Regency TR-1, the world’s first commercial transistor radio.
In 1954, the Industrial Development Engineering Associates company began selling the Regency TR-1, the world’s first commercial transistor radio. The TR-1 sold over 100,000 units, ushering in the commercial transistor industry.Science and facts💡

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