Person ? L. Ferreira da Silva Vianna
- From 1923-01-01 to 1923-12-31, Administrateur of COMPAGNIE DU ZAMBÈZE (Companhia da Zambezia)
- From 1927-01-01 to 1927-12-31, Administrateur of COMPAGNIE DU ZAMBÈZE (Companhia da Zambezia)
- From 1933-01-01 to 1933-12-31, Administrateur of COMPAGNIE DU ZAMBÈZE (Companhia da Zambezia)
- From 1940-01-01 to 1940-12-31, Conseiller fiscal of COMPANHIA PORTUGUESA DE TABACOS (Compagnie Portugaise de Tabacs)
- From 1940-01-01 to 1948-12-31, Président of COMPAGNIE DU ZAMBÈZE (Companhia da Zambezia)
- From 1945-01-01 to 1945-12-31, Administrateur of COMPANHIA PORTUGUESA DE TABACOS (Compagnie Portugaise de Tabacs)
- From 1948-01-01 to 1953-12-31, Conseiller fiscal of COMPANHIA PORTUGUESA DE TABACOS (Compagnie Portugaise de Tabacs)