Finnish engineer Eric Tigerstedt solved the dilemma of sound-on-film already before World War I. All images and sounds in this film are produced from the surviving test materials originally created in 1914.
Patent Nr. 314805
演员： 未知
导演：Mika Taanila
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类型：短片
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状态：2分钟
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更新时间：2026-07-31
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地区：芬兰 Finland
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年份：2020
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语言：英语
剧情：《Patent Nr. 314805》上映于2020年,由主演;影片讲述：Finnish engineer Eric Tigerstedt solved the dilemma of sound-on-film already before World War I. All images and sounds i更多