Patent Nr. 314805 2020
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Finnish 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.
- Released: 2020-05-17
- Runtime: 2 minutes
- Genre: Documentary
- Stars:
- Director: Mika Taanila, Jussi Eerola, Mika Taanila
