The Phone By 26889 Mar 10, 1876 The First Phone http://www.americaslibrary.gov/jb/recon/jb_recon_telephone_1.html May 2, 1900 Telephone transmissions http://www.greatachievements.org/?id=3625 May 2, 1904 Fleming invents the vacuum diode http://www.greatachievements.org/?id=3625 May 8, 1919 First transcontinental telephone call http://www.greatachievements.org/?id=3625 May 8, 1920 Switching systems and rotary-dial telephones http://www.greatachievements.org/?id=3625 May 10, 1947 A Mathematical Theory of Communication Jul 10, 1947 North American Numbering Plan May 10, 1949 First phone to combine a ringer and handset May 10, 1951 Direct long distance calling first available May 10, 1956 First transatlantic telephone cable
