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Day in History Archive January 15

January 15

Lee de Forest Receives Patent for Triode Tube Please click here to visit RF Cafe.

1861: The safety elevator was patented as a "Hoisting Apparatus" by Elisha Otis, of Yonkers, NY. 1870: The Democratic party was first represented as a donkey in a cartoon by Thomas Nast in Harper's Weekly. 1907: The three-element vacuum tube (triode) patent was issued to its inventor, Dr Lee de Forest as a "device for amplifying feeble electric currents - such, for example, as telephone currents." 1908: Edward Teller, "father of the H-bomb," was born. 1943: The Pentagon, the world's highest capacity office building, was dedicated in Arlington, VA. 1967 :The first Super Bowl was played as the Green Bay Packers of the NFL defeated the Kansas City Chiefs of the American Football League, 35-10. 1970: William Piper, designer of the infamous J-3 aircraft, died. 1974: "Happy Days" first aired on ABC. 2001: Wikipedia, the source used for many of the events listed here, first went online.

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