![Patentti Nr. 314805](https://i0.wp.com/www.themoviedb.org/t/p/w185/mbF9tIkUdOLVWbWrrVveIN7xzsT.jpg)
Patentti Nr. 314805
Patentti Nr. 314805
"Patentti Nr. 314805" Película Completa Online | RePelis.
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
- Actores: