Category:SY4307A

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<nowiki>SY4307A; SY4307A; SY4307A; output pentode (by Standard Telephone and Cable, UK, 1930s); выходной пентод (номенклатура Standard Telephone and Cable, Великобритания, 1930е); 4307A; CV1717</nowiki>
SY4307A 
output pentode (by Standard Telephone and Cable, UK, 1930s)
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Media in category "SY4307A"

The following 4 files are in this category, out of 4 total.