Patentti Nr. 314805
Patentti Nr. 314805
Ver Patentti Nr. 314805 (2020) Online en Español y Latino. 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.
- Género: Documental
- País: Finland
- Director: Mika Taanila
- Actores:
