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APERFEIÇOAMENTOS RELATIVOS A APPARELHOS ELECTRICOS PARA TRANSMITTIR E RECEBER SIGNAES

0.1 - Acervo Histórico de patentes do INPI-17537
Item
10/09/1920

Part of Acervo Histórico de patentes do INPI

APERFEIÇOAMENTOS RELATIVOS A APARELHOS ELÉTRICOS PARA TRANSMITIR E RECEBER SINAIS

VICKERS LIMITED

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