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The following articles cover the timeline of United States inventions: Timeline of United States inventions (before 1890), before the turn of the century; Timeline of United States inventions (1890–1945), before World War II; Timeline of United States inventions (1946–1991), during the Cold War
It was invented by American scientist Joseph Henry in 1831. [64] 1831 Doorbell (electric) A doorbell is a signaling device commonly found near a door. It commonly emits a ringing sound to alert the occupant of the building to a visitor's presence. The electric doorbell was invented by Joseph Henry in 1831. [25] [65] 1833 Sewing machine (lock ...
Thomas E. Murray (October 21, 1860 – July 21, 1929) was an American inventor and businessman who developed electric power plants for New York City as well as many electrical devices which influenced life around the world, including the dimmer switch and screw-in fuse. It has been said that he "invented everything from the power plant up to ...
American engineer Peter Cooper Hewitt invented the Fluorescent lamp. 1904: English engineer John Ambrose Fleming invented the diode. 1906: American inventor Lee de Forest invented the triode. 1908: Scottish engineer Alan Archibald Campbell-Swinton, laid out the principles of television. 1909: Mica capacitor was invented by William Dubilier. 1911
Most ice cream scoops are hemispherical-shaped and contain a mechanical device to force the ice cream out of the scoop. The ice cream scoop was invented by African-American Alfred L. Cralle who was issued U.S. patent #576,395 on February 2, 1897. [58] 1897 Charcoal briquette
The three also invented the modern power distribution system: Instead of former series connection they connect transformers that supply the appliances in parallel to the main line. The first demonstrative long-distance (34 km, 21 mi) AC line was built for the 1884 International Exhibition of Turin, Italy.
Play Just Words free online! By Masque Publishing. Advertisement. Advertisement. all. board. card. casino. puzzle. other. ... Here are 5 big things that disappear after you retire in America ...
Timeline of pre–United States history; Timeline of the history of the United States (1760–1789) Timeline of the history of the United States (1790–1819) Timeline of the history of the United States (1820–1859) Timeline of the history of the United States (1860–1899) Timeline of the history of the United States (1900–1929)