At the age of 15, he received his first patent for an electronic tube with multiple (three) systems in a single tube for applications in wireless telegraphy
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At the age of 15, he received his first patent for an electronic tube with multiple (three) systems in a single tube for applications in wireless telegraphy
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-23 from Wikipedia. The archived copy is preserved so this citation survives link rot.