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Timeline |
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Joseph Henry Samuel Morse Western Union Gray & Barton Western Electric A.G. Bell and Elisha Gray New Haven, Connecticut Alexander Graham Bell Richmond, Virginia Thomas Edison Bell -vs- Gray NYC-Chicago LDX Call
Pioneers NYC-San Francisco- Bell Labs |
Door Bell Morse Code Telegraph Telegraph System Electrical Supplies WU purchases G&B Telephone Patent First Telephone Exchange Bell Telephone Company Southern Bell Telephone Light Bulb A T&T Loading Coil Radio Triode Vacuum Tube Organization Coast to Coast LDX Transistor |
~1830 ~1835 ~1856 ~1869 ~1872 ~1876 ~1877 ~1878 ~1879 ~1880 ~1885 ~1892 ~1897 ~1907 ~1910 ~1915 ~1940s ~1947
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