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UM MECANISMO DE MUDANÇA DE VELOCIDADE POR MEIO DE RODAS DE FRICÇÃO

0.1 - Acervo Histórico de patentes do INPI-21230
Item
01/08/1923

Part of Acervo Histórico de patentes do INPI

UM MECANISMO DE MUDANÇA DE VELOCIDADE POR MEIO DE RODAS DE FRICÇÃO

ADOLF FRIEDRICH GERDES

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