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telefone - Coggle Diagram
telefone
lampada
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radio
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william dubilier, Guglielmo Marconi, Reginald Fessenden
refrigerador
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televisão
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chuveiro elétrico
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celular
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Martin Cooper, w rae young, eric tigerstedt, Donald Cox
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Alexander Graham Bell, Amos Dolbear, john peirce, Charles A. Cheever