What they don’t teach in school

• The Air Conditioner … Frederic Jones, July 12, 1949 U.S. Patent 2,475,841
• The Automatic Transmission … R Spikes, Nov. 28, 1933
• The Clothes Dryers … G Sampson, Aug 16, 1887 U.S. Patent 368,265
• The Electric Lamp … Lewis Latimer, Sept 13, 1881 U.S. Patent 247,097
• The Elevator … Alexander Miles, Oct. 11,1877 U.S. Patent 371,207
• The Evaporating Pin… Norbert Rileux, Dec. 10, 1846 U.S. Patent 4,879
• The Golf Tee … G Grant, Mar. 3, 1886 U.S. Patent 638,920
• The Guitar… R Flemming Jr., Mar 3, 1886 U.S. Patent 338,727
• The Lawnmower … J. Burr, May 9, 1899 U.S. Patent 624,749
• The Lawn Sprinkler System … Elijah Mc Coy , Sept. 26, 1899 U.S. Patent 631,649
• The Pencil Sharpener … John Love, Nov. 23, 1897 U.S. Patent 549,114
• The Refrigerator … John Standard, July 14, 1891 U.S. Patent 445,891
• The Shoe Lasting Machine … Jan Matzelinger, Mar. 20,1993 U.S. Patent 274,202
• The Street Letter Box … P. Downing , Oct. 27, 1891 U.S. Patent 462,093
• The Telephone Transmitter … Granville Woods, Dec. 2, 1884 U.S. Patent 308,817
• The Traffic Light … Garrett Morgan, Feb. 27, 1922 U.S. Patent 1,475,024