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UM PÓ SILICIOSO SILICO-QUARTZOSO, PARA O FIM DE SER APPLICADO MESMO EM PÓ NA LIMPEZA DOS METAES E OUTROS OBJECTOS

0.1 - Acervo Histórico de patentes do INPI-15631
Item
12/04/1919

Part of Acervo Histórico de patentes do INPI

UM PÓ SILICIOSO SILICO-QUARTZOSO, PARA O FIM DE SER APLICADO MESMO EM PÓ NA LIMPEZA DOS METAIS E OUTROS OBJETOS

ROQUE RONCHI

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