Below is a table showing when major technologies were introduced to the public at large and how long it took them to reach 85% of US households. Technology Introduced In 85% US households Time to 85% Telephone 1875 1965 90y Electricity 1903 1945 42y Automobile 1903 1981 78y Radio 1920 1943 23y Refrigerator 1922 1951 29y Clothes Washer 1926 currently ~83% Air Conditioner 1947 2003 56y Clothes Dryer 1950 currently ~80% Dish Washer 1950 currently ~65% Color TV 1960 1981 21y Microwave 1972 ...
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