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1ESS (Olympia WA. Whitehall office c. 1986)
Connections Museum
Jul 17, 2018
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Connections Museum Setting Up Frames & Working No. 5 Crossbar Office (1987)
AT&T Bell Labs 1 ESS (Electornic Switching System) Manufacturing Processes (1965)
SolidWorks RE Tutorial # 337: DC Motor complete video
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operating analog telecom switches, Feb 2017, Seattle's Museum of Communications
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Manufacturing 1A and 2B ESS Memory - AT&T Archives
[Panel] Sarah troubleshoots Incoming #30
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