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APERFEIÇOAMENTOS EM APPARELHOS PARA SEPARAR SUBSTANCIAS DE DIFERENTES PESOS ESPECIFICOS COMO CARVAO FINO, MINERIOS E SEMELHANTES

0.1 - Acervo Histórico de patentes do INPI-14044
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10/01/1917

Part of Acervo Histórico de patentes do INPI

APERFEIÇOAMENTOS EM APARELHOS PARA SEPARAR SUBSTÂNCIAS DE DIFERENTES PESOS ESPECÍFICOS COMO CARVÃO FINO, MINÉRIOS E SEMELHANTES

JOHN MARRIOT DRAPER

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