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10M telephones (1 янв 1918 г. – 31 дек 1918 г.)

Описание:

It was estimated that approximately ten million Bell system telephones were in service throughout the U.S.

Добавлено на ленту времени:

click for descriptions/PHONE TIMLINE

23 окт 2018

0

0

420

Дата:

1 янв 1918 г.

31 дек 1918 г.

~ 12 months

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