Identifying Sylvania-manufactured tubes

Sylvania

Posted in Tubes on October 29th, 2007

The article provides examples of Sylvania-manufactured tubes.

Sylvania was probably the most prolific American tube manufacturer, and their tubes were found packaged by many well-known USA name brands. Among the EIA codes that you will find on Sylvania-manufactured tubes are 312 and 722. Here are photographs to illustrate the wide diversity of companies that Sylvania manufactured for…

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