Patent Nr. 314805
2020 • 0h 2m • Documentary
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.
- Director
- Mika Taanila
- Writers
- Jussi Eerola, Mika Taanila
- Status
- Released
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