US2514234A
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Process for the manufacture of color photographic images
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US2470769A
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Color photographic material and processes for producing same
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US2410025A
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Production of colored photographic pictures
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US2514233A
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Process for the manufacture of golor photographic images
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US2465586A
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Process for producing aldehydes and derivatives thereof
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US2348894A
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Process and treating bath for the production of colored photographic pictures
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US2367936A
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Photographic printing method
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US2320358A
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Method of producing color separation images
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US2348735A
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Method of and material for producing corrected photographic images
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US2353661A
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Process of obtaining photographic images
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US2317369A
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Printing process for color photography
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US2347119A
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Process for producing photographic multicolor pictures
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US2356759A
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Color photographic material and process for producing same
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US2361541A
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Process for the manufacture of color photographic images
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US2368463A
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Photographic material and processes for treating same
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US2361936A
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Photographic materials and process of manufacturing same
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US2310226A
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Process for the manufacture of photographic materials
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US2296843A
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Dyed substance
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US2278984A
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Method of treating color photographic materials
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US2313993A
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Organic sulphur and selenium compounds
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