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SES (jan 1, 1936 – dec 31, 1936)
Description:
Research into electronic telephone exchanges began and was eventually perfected in the 1960's with the electronic switching system (SES).
Added to timeline:
click for descriptions/PHONE TIMLINE
By
Jasun Foley
23 Oct 2018
0
0
420
Date:
jan 1, 1936
dec 31, 1936
~ 12 months
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