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UM PROCESSO PARA PRODUÇÃO E REFORÇAMENTO DE CORRENTES ALTERNADAS, APPLICAVEL ESPECIALMENTE PARA TRANSMISSÃO E RECEPÇÃO EM TELEGRAPHIA E TELEPHONIA

0.1 - Acervo Histórico de patentes do INPI-10458
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28/05/1912

Part of Acervo Histórico de patentes do INPI

UM PROCESSO PARA PRODUÇÃO E REFORÇAMENTO DE CORRENTES ALTERNADAS, APLICÁVEL ESPECIALMENTE PARA TRANSMISSÃO E RECEPÇÃO EM TELEGRAFIA E TELEFONIA

RUDOLF GOLDSCHMIDT

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