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se inventa la aspiradora x hubert cecil
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aeroplano
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camara cinematografia de dos colores
albert smith -
aire acondicionado
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se inveta la television
john loige -
se crea el radar
sir robert watson -
se invento la fotocopiadora por chester carlson
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se crea la computadora electronica digital echa por john presoer
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se hace la television a color
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por narinder S
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intesesor del internet
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