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10M telephones (jan 1, 1918 – dec 31, 1918)

Description:

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

Added to timeline:

click for descriptions/PHONE TIMLINE

23 Oct 2018

0

0

420

Date:

jan 1, 1918

dec 31, 1918

~ 12 months

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