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GB1063113A
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Improvements in or relating to the production of negative transparencies
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US2726147A
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Transparencies for receiving printing and method for producing the same
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DE838702C
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Process for correcting the tonal value of relief raster positives or negatives
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DE838687C
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Transparent layer carrier with retouching or intermediate layer used for image acquisition
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DE825211C
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Process for the production of scale grids
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DE832547C
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Process for making recordings or copies with scale grids
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DE832100C
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Process for creating etching reliefs from colloid layers by extracting the silver, which is distributed in an image-wise manner
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