Patent Nr. 314805
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2 minFinnish engineer Eric Tigerstedt solved the dilemma of sound-on-film already before the First World War. All images and sounds in this short film are produced from the surviving test materials originally created in 1914.
Country:
FIGenre:
DocumentaryReleased:
2020-05-17Languages:
FinnishCompanies:
Elokuvayhtiö Testifilmi