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Osvaldo Coutinho de Faria

Oswaldo Coutinho de Faria, Brazilian scientist in France (Rio de Janeiro 06 November 1886 - ?)
 

INVENTIONS

A simplified system to transform alternate to continuous currents (AC/DC) (1903) 

A transformer (1903)

Kinetophone, a forerunner of vitaphone (1897)

Introduced improvements in radiography and cinematography