Technology of the 20th Centruy By Danneubauer Period: Jan 1, 1900 to Dec 31, 2000 Inventions of the 2th century May 25, 1901 Radio May 25, 1902 Air Conditioner May 25, 1903 Gas motered airplane May 25, 1904 Benjamin Holt, Tractor May 25, 1904 Teabag May 25, 1906 William Kellogg, Cornflakes May 25, 1907 Color Photograph ( picture attached is the first ever color photograph) May 25, 1907 Helicopper May 25, 1908 Jaques Brandenberger, Cellphone May 25, 1909 G. Washinton, Instant Coffee
