The Invention of the Telephone
1876 - Alexander Graham Bell filed patent for telephone
at noon, January 14, in NYC (Elisha Gray filed similar
1878 - First manual telephone exchange New Haven,
Connecticut with 21 subscribers (including Mark Twain).
1891 - Almon B. Strowger, a funeral director from Kansas City, filed a patent for the first automatic telephone exchange.
1924 - Research initiated by H. Nyquist results in “telephotography”, AT&T’s experimental fax machine.
1949 - Muirhead Ltd. installed first fax system in Japan for the Asahi Times. Commercially successful in Japan for transmitting ideograms. Worldwide market expanded in the 1970s.
1962 - The AT&T Telstar satellite launched by NASA on July 10.