Watch Patent Nr. 314805 (2020) Official Trailer
0 / 10 IMDb May 17, 2020 0h 2m
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
Runtime
0h 2m
Release Date
May 17, 2020
Genre
Documentary
Status
Released
Languages
Finnish
Country
Finland
Production Companies
Elokuvayhtiö TestifilmiAdvertisement
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