Timeline
1905	Albert Marsh patents alloy of nickel and chromium, Nichrome, making electric toasters possible.
1908	First U.S. patent for vacuum cleaner, James W. Spangler.
1909	First successful electric toaster was produced.
1909	Development of high-speed universal motor for vacuum cleaners.
1913	First refrigerator for home use.
1919	Eureka produces 2,000 vacuums a day due to improved mass production techniques.
1919	Charles Strite invents first pop-up toaster.
1920s	Safety standards for electric outlets and plugs revise housing codes.
1926	General Electric introduces refrigerator with hermetically sealed compressor.
1927	John W. Hammes patents garbage disposal.
1929	Cost of U.S. electric refrigerator $292, down from $600 in 1920.
1931	U.S. refrigerator production tops one million units.
1931	Birds Eye Frosted Foods go on sale across the United States.
1932	Electric dishwasher.
1935	Clothes dryer, Ross Moore.
1937	Hand-held vacuum.
1946	Microwave oven, Percy L. Spencer.
1947	First top-loading automatic clothes washer.
1955	Domestic deep freezer.
1957	Spin clothes dryer.
1961	Smaller freezers with front doors introduced, more suitable for home kitchens.
1963	Steam-or-dry electric iron.
1976	Singer electronic sewing machine that dials up to 25 preset stitches, self-winding bobbin.
1980s	Microprocessors revolutionize household appliances.