Which company pioneered the first major product demonstration broadcast, showcasing a revolutionary invention to millions via television in 1939?

In the world of inventions and discoveries, marketing innovations have played a crucial role in how groundbreaking products reach the masses. One particular advertising technique revolutionized how new technologies were introduced to the public in the early 20th century. Test your knowledge of this fascinating intersection between technological innovation and product advertising!

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RCA, demonstrating the first television at the New York World's Fair
Bell Laboratories, demonstrating the transistor to potential investors
Westinghouse, demonstrating the first home refrigerator to American households
IBM, demonstrating the first commercial computer to business leaders