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UM NOVO CARVÃO ARTIFICIAL DENOMINADO HULHITE

0.1 - Acervo Histórico de patentes do INPI-12451
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11/09/1914

Part of Acervo Histórico de patentes do INPI

UM NOVO CARVÃO ARTIFICIAL DENOMINADO HULHITE

HAROLDO DE FRIGUEIREDO; LUIZ CAETANO DE OLIVEIRA

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