Patent Nr. 314805

Patent Nr. 314805
Available Formats Patent Nr. 314805 Secure Scanned : 10/31/2024 Watch HD Download HD
Patent Nr. 314805

Patent Nr. 314805 2020

Patent Nr. 314805 2020

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.

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