Inventions in the 1920's: inventions that shaped America in the 1920s included the automobile, the airplane, the washing machine, the radio, the assembly line, refrigerator and television.
Inventions in the 1920's: Inventions that shaped America in the 1920s Advances in technology led to the age of electricity and many homes in America, especially in the industrialized cities, were powered by electricity. Access to electricity in the 1920's provided Americans with the power required to run new labor-saving devices such as refrigerators, washing machines, radios, phonographs, electric razors and irons, and vacuum cleaners.