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the basilar membrane at t archives
8160 | 02:15 | 2013-03-12

phone pioneers talk telephone 1930 at t archives
4906 | 37:14 | 2013-03-12

bell system super switcher commercial 1976
38974 | 01:05 | 2013-03-12

at t archives arctic mission
5550 | 19:10 | 2012-03-12

at t archives now you can dial bonus edition
12172 | 11:25 | 2013-03-12

at t archives microworld bonus edition
20033 | 16:11 | 2012-03-12

coaxial how was the first telephone network built
2730 | 06:04 | 2016-03-12

at t archives the viewtron system and sceptre videotex terminal 1983
60357 | 05:39 | 2012-03-12

at ts vision of the future circa 1993 at t archives
127374 | 14:39 | 2013-03-12

commitment 1973 at t archives western electric manufacturing
23613 | 22:45 | 2014-03-12

at t archives principles of the optical maser
44235 | 29:09 | 2012-03-12

at t archives far speaking
2051 | 11:01 | 2012-03-12

1979 bell labs project for the deaf to communicate over telephone lines using american sign language
15115 | 05:05 | 2016-03-12

at t bell labs 1 ess electornic switching system manufacturing processes 1965
21918 | 25:31 | 2015-03-12

how our telephones became mobile
1623 | 04:45 | 2016-03-12

at t archives the driving difference
3702 | 17:23 | 2012-03-12