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UMA MACHINA APERFEIÇOADA DE CALCULAR

0.1 - Acervo Histórico de patentes do INPI-20588
Item
14/02/1923

Part of Acervo Histórico de patentes do INPI

UMA MÁQUINA APERFEIÇOADA DE CALCULAR

CARL MAURITZ FREDERICK FRIDEN

APERFEIÇOAMENTOS EM MACHINAS DE CALCULAR

0.1 - Acervo Histórico de patentes do INPI-19424
Item
11/03/1922

Part of Acervo Histórico de patentes do INPI

APERFEIÇOAMENTOS EM MÁQUINAS DE CALCULAR

CARL MAURITZ FREDERICK FRIDEN

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