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he invented the electric battery.
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he invented the cotton gin, miling, and interchangable parts.
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he invented an automobile
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he invented the telegraph, the light bulb, vitascope, phonograph cylinder, carbon microphone, movie camera, electric power distributer, mimeograph, phonograph.
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he invented the telephone and the phonograph
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he invented the Moving Assembly Line
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invented aircraft and fixing wing aircraft
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he invented the magnetic detector and the raidio