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September 15, 2023September 22, 2023By Joe Gruber0 likes

General Electric’s Vacuum Tube Contributions – 1915 – 1918 by Jerry Vanicek and Joe Gruber Expanded and revised article that...

August 19, 2023September 21, 2023By Joe Gruber0 likes

Hugo Gernsback was born in 1884 in Luembourg and immigrated to the US in 1904 to market an improved dry...

August 6, 2023September 21, 2023By Joe Gruber0 likes

By Joe Gruber Vacuum tube collectors may ask- What is the Eaton tube anyhow? This author will attempt to answer...

July 29, 2023September 21, 2023By Joe Gruber0 likes

By Joe Gruber Illustrations from the Joe Gruber collection as stated. While most collectors know, including this author, why De...