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UM NOVO PROCESSO PARA RETIRAR OS RESIDUOS GAZOSOS E PARA PURIFICAR OS GAZES INERTES NOS TUBOS ELECTRICOS E EM APARELHOS SIMILARES

0.1 - Acervo Histórico de patentes do INPI-18094
Item
04/02/1921

Part of Acervo Histórico de patentes do INPI

UM NOVO PROCESSO PARA RETIRAR OS RESÍDUOS GASOSOS E PARA PURIFICAR OS GASES INERTES NOS TUBOS ELÉTRICOS E EM APARELHOS SIMILARES

NAAMLOOZE VENNOOTSCHAP PHILLIPS GLOEILAMPENFABRIEKEN

APERFEIÇOAMENTOS EM CATHODIOS LUMINOSOS PARA TUBOS DE DESCARGA ELECTRICA

0.1 - Acervo Histórico de patentes do INPI-21350
Item
31/08/1923

Part of Acervo Histórico de patentes do INPI

APERFEIÇOAMENTOS EM CATÓDIOS LUMINOSOS PARA TUBOS DE DESCARGA ELÉTRICA

NAAMLOOZE VENNOOTSCHAP PHILLIPS GLOEILAMPENFABRIEKEN

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