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Patent Nr. 314805

0 0 • 2020 • 0h 2m • 0.0/10 • Drama

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. Watch Patent Nr. 314805 in HD free online now on SFlix with multiple servers and instant playback. Enjoy high-quality streaming of Patent Nr. 314805 and share your thoughts in the comments below!

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