File:Loewe 1931 vacuum tube.JPG

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Description A Loewe 1931 vacuum tube (possibly the 3NF or a similar model) that integrated multiple functions in a single tube, a predecessor to the integrated circuit.
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Source Self-photographed
Author Badseed
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current08:20, 20 February 2009Thumbnail for version as of 08:20, 20 February 20093,008 × 2,000 (2.68 MB)wikimediacommons>Badseed{{Information |Description=A Loewe 1931 vacuum tube (possibly the 3NF or a similar model) that integrated multiple functions in a single tube, a predecessor to the integrated circuit. |Source=Own photo |Date=February 2009 |Author=User:Badseed |Pe

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