DE2839031A1
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Half tone of primary colour print approximating black by balancing - separates differentially filtered images and reduces dimensions of dots
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ES473053A1
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Printing method of primary colors live (Machine-translation by Google Translate, not legally binding)
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PH14939A
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Improved colour printing method
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FR2433419A1
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Half tone of primary colour print approximating black by balancing - separates differentially filtered images and reduces dimensions of dots
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US4217822A
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Color printing method
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SE7808297L
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Procedure for the production of primary-colour printing with half-tones
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NZ187203A
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Half-tone colour printing density of black component screen image increased
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AU3266178A
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Colour printing method
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NL7712527A
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Half tone of primary colour print approximating black by balancing - separates differentially filtered images and reduces dimensions of dots
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CA1104415A
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Colour printing method
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GB1529716A
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Colour printing method
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US3926117A
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Color printing method
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AU6658274A
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Improved colour printing method
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