Bell's experimental telephone, using a different design, was demonstrated at the Centennial Exhibition in Philadelphia, where Henry was one of the judges for electrical exhibits
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Bell's experimental telephone, using a different design, was demonstrated at the Centennial Exhibition in Philadelphia, where Henry was one of the judges for electrical exhibits
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-17 from Wikipedia. The archived copy is preserved so this citation survives link rot.