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Magnavox Historical Preservation Association - Today is the 100th anniversary of Pridham and Jensen's invention of the loudspeaker. Their company would later be known as Magnavox (Great Voice.) | Facebook
Lake County History: James Pridham & The People's Drug Store
Lake County History: James Pridham & The People's Drug Store
The Loudspeaker Celebrates 100 Years of Use and Influence | COMSOL Blog
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Højttaler - Wikipedia, den frie encyklopædi
Jensen
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