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US2152621A
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Base for color copying screens
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GB481175A
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Improvements in support for photographic colour-screen prints
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GB480766A
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Method of producing photographic colour-screen prints on paper and other supports
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GB478329A
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Method suppressing contrast in photographic colour-screen negatives and diapositives
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GB394099A
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Method of producing pictures in natural colours by means of multi-coloured taking and printing screens
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GB380889A
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Method of obtaining correct registration of negative and colour screen in photographic multi-colour printing
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GB379290A
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Improvements in muti-colour screens on paper and like supports for use in colour photography
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US1557085A
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Daylight plate changer
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DE603074C
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Setting procedure for projection devices
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