Patent Nr. 314805
May 17, 2020 0h 2m
★ 0.0 (0 votes)
Documentary
Overview
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.
Source:
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Status: Released
Production Companies: Elokuvayhtiö Testifilmi
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