Item 21074 - UM NOVO PROCESSO PARA A CONVERSÃO DE ONDAS ELECTRICAS OU ONDAS HERTZIANAS, EM ONDAS SONORAS, E APPARELHO PARA ESSE FIM

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0.1 - Acervo Histórico de patentes do INPI-21074

Title

UM NOVO PROCESSO PARA A CONVERSÃO DE ONDAS ELECTRICAS OU ONDAS HERTZIANAS, EM ONDAS SONORAS, E APPARELHO PARA ESSE FIM

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  • 22/06/1923 (Creation)

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application/pdf

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UM NOVO PROCESSO PARA A CONVERSÃO DE ONDAS ELÉTRICAS OU ONDAS HERTZIANAS, EM ONDAS SONORAS, E APARELHO PARA ESSE FIM

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Domínio público

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  • pt-br

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191923021074

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