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First phones are sold (1 Jan 1877 Jahr – 1 Jan 1878 Jahr)
Beschreibung:
by the end of 1877 there were 3000 active private telephones
Zugefügt zum Band der Zeit:
30 Okt 2018
0
0
337
Technology project
history of phones
Datum:
1 Jan 1877 Jahr
1 Jan 1878 Jahr
~ 12 months
Abbildungen: