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UM PROCESSO PARA AUGMENTAR O PODER THERMICO E DIMINUIR A PORCENTAGEM DE CINZAS DO CARVÃO NACIONAL E ESTRANGEIRO

0.1 - Acervo Histórico de patentes do INPI-18770
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23/08/1921

Part of Acervo Histórico de patentes do INPI

UM PROCESSO PARA AUMENTAR O PODER TÉRMICO E DIMINUIR A PORCENTAGEM DE CINZAS DO CARVÃO NACIONAL E ESTRANGEIRO

THEOPHILO HENRIQUE DE SANTANNA

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