File:Telegrafo sem fio.jpg

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Português: Diagrama Esquemático do Transmissor e Receptor de Telegrafia sem Fio - patente obtida em 1904 nos Estados Unidos por Roberto Landell de Moura
Date
Source Pe. Roberto Landell de Moura - Esquemático do Transmissor e Receptor de Telegrafia - Patente obtida em 1904 nos Estados Unidos.
Author Pe. Roberto Landell de Moura - 1904
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(Reusing this file)		 Dominio Público
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current05:36, 18 March 2009Thumbnail for version as of 05:36, 18 March 20091,175 × 1,803 (330 KB)Valumbrosius (talk | contribs){{Information |Description={{pt-br|1=Diagrama Esquemático do Transmissor e Receptor de Telegrafia sem Fio - patente obtida em 1904 nos Estados Unidos por Roberto Landell de Moura}} |Source=Pe. Roberto Landell de Moura - Esquemático do Transmissor e Rece

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