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Motion picture film projector
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Cassette for a sound slide projector
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Motion picture film projector
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Sound slide projector system
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Sound slide projector
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Multiple projector system with single sound source
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Strip film projector
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Strip film projector
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Splicer for butt splicing motion picture film
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Automatic sound slide projector
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GB1154401A
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Method of Cumulative Recording of Intelligence
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Can for storing motion picture film and magnetic tape
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Carrier for audible and visual messages
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Optical multiple track sound projector
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Audio-visual teaching material and apparatus for preparing such material
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Photographic cut-film or plate holder
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Optical sound-recording apparatus
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GB1059140A
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A method of producing a magnetic record of a sound
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Method of and device for recording and reproducing photographic sound patterns
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Sound scanning assembly in a strip film projector
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