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Automatic Electric
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key events
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🌐 Wikipedia
Almon Strowger invents the automatic switch
1889
🌐 Wikipedia
Strowger forms Automatic Electric Company, and receives switch patent
1891
🌐 Wikipedia
First Strowger automatic exchange opens (in LaPorte, Indiana)
1892
Strowger factory
1909
AE 40
1939
Automatic Electric acquires Gray Manufacturing Co.
1948