Sylvania was in 1924, with a focus on electron tubes. Sylvania has their roots in Pennsylvania and Massachusetts (USA). They are a lot like General Electric, from their history to modern day, both produced electron tubes and then moved over to light bulbs. Essentially, GE and Sylvania specialize in glass encased circuits.


Sylvania Tube Manuals:


Looking for something in particular that you can’t find? Contact me and I’ll see if I can help you run it down!




Join the discussion and let HL know what you think!

This site uses Akismet to reduce spam. Learn how your comment data is processed.