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UM AMPEROMETRO PARA CORRENTES DE ALTA FREQUENCIA DE QUALQUER INTENSIDADE

0.1 - Acervo Histórico de patentes do INPI-16660
Item
09/03/1920

Part of Acervo Histórico de patentes do INPI

UM AMPERÔMETRO PARA CORRENTES DE ALTA FREQUÊNCIA DE QUALQUER INTENSIDADE

JOSEPH BETHENOD

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