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Patent Nr. 314805

20202mMovieDocumentary

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.

DirectorMika Taanila
WritersMika Taanila·Jussi Eerola

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Patent Nr. 314805 was released on May 17, 2020 but we couldn't find it on any streaming service yet. Rights can change — try again later.

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Patent Nr. 314805 — streaming FAQ

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Patent Nr. 314805 isn't streaming anywhere in Canada yet.

Is Patent Nr. 314805 on Netflix?

No, Patent Nr. 314805 is not on Netflix in Canada as of September 2026.

Is Patent Nr. 314805 on Amazon Prime Video?

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Where can I watch Patent Nr. 314805 for free?

Patent Nr. 314805 isn't streaming in Canada yet, so there's no way to watch it free at the moment.

What is the OTT release date for Patent Nr. 314805?

Patent Nr. 314805 hasn't started streaming in Canada yet. Based on the typical 6–8 week theatrical-to-streaming window, we estimate it will arrive around July 5, 2020. This is a prediction, not a confirmed date.