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ALMANAC: Vacuum tubes
Posted
November 16, 2014
Views
1,645
Likes
13
Comments
1
Engagement
0.85%
November 16, 2014
1,645
13
1
0.85%
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1:21Now PlayingOn November 16, 1904, British inventor John Ambrose Fleming patented an electronic receiver that revolutionized communications. Charles Osgood reports.
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