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APERFEIÇOAMENTOS EM APPARELHOS DE DESCARGA DE ELECTRÕES

0.1 - Acervo Histórico de patentes do INPI-18538
Item
15/06/1921

Part of Acervo Histórico de patentes do INPI

APERFEIÇOAMENTOS EM APARELHOS DE DESCARGA DE ELÉTRONS

INTERNATIONAL GENERAL ELECTRIC COMPANY, CORPORATED

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