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APERFEIÇOAMENTOS EM CONCENTRADORES DE ONDAS SONORAS PARA INSTRUMENTOS TRANSMISSORES DE SONS

0.1 - Acervo Histórico de patentes do INPI-16019
Item
03/09/1919

Part of Acervo Histórico de patentes do INPI

APERFEIÇOAMENTOS EM CONCENTRADORES DE ONDAS SONORAS PARA INSTRUMENTOS TRANSMISSORES DE SONS

ALEXANDER MARR

APERFEIÇOAMENTOS EM CONCENTRADORES DE ONDAS SONORAS

0.1 - Acervo Histórico de patentes do INPI-19905
Item
14/08/1922

Part of Acervo Histórico de patentes do INPI

APERFEIÇOAMENTOS EM CONCENTRADORES DE ONDAS SONORAS

ALEXANDER MARR

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