Category:Phonofilm
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Phonofilm is an optical sound-on-film system developed by inventors Lee de Forest and Theodore Case in the early 1920s.
Media in category "Phonofilm"
The following 8 files are in this category, out of 8 total.
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Bell telephone magazine (1922) (14569317490).jpg 2,082 × 1,624; 1.33 MB
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De Forest Phonofilm Co. Inc. in White House grounds LOC npcc.11945.jpg 5,276 × 4,239; 2.85 MB
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De Forest Phonofilm Co. Inc. in White House grounds LOC npcc.11945.tif 5,276 × 4,239; 21.33 MB
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Joe Termini the Somnolent Melodist (1926) - 1.jpg 118 × 812; 53 KB
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Love's Old Sweet Song (1923) - 1.jpg 577 × 772; 140 KB
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Phonofilm1.jpg 347 × 568; 111 KB
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SLNSW 8818 A piece of early sound equipment of the De Forest Phonofilms Corporation.jpg 1,400 × 1,098; 277 KB