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Automatic dialing system (1 ene 1891 año – 31 dic 1891 año)

Descripción:

First automatic dialing system invented by a Kansas City undertaker. He believed that crooked operators were sending his potential customers elsewhere. It was his aim to get rid of the operators altogether.

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ByJasun Foley
23 oct 2018
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0
420

fecha:

1 ene 1891 año
31 dic 1891 año
~ 12 months
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