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GB443811A
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Improved process and apparatus for obtaining films for cinematographic projection incolours
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GB447225A
|
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Improvements in photographic apparatus for colour cinematography
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US2068209A
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Apparatus for obtaining films for cinematographic projection in colors
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GB436569A
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Improvements in multiple objectives for three-colour projection
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US2043522A
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Photographic apparatus for color cinematography
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US2056696A
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Complex objective for three-color projection
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GB255486A
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Improved method and apparatus for registering designs on printing-blocks for multi-colour printing
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