Patent Nr. 314805 (2020)
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Subtitles for: Patent Nr. 314805 (2020)
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.
| Genre | Documentary |
| Duration | 2m |
| Country | Finland |
| Release | 17 May 2020 |
| Language | FI |
| Director | Mika Taanila |
| IMDb | tt12299812 ↗ |
| Type | Movie Released |
